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Onyx Boox Note Air 3 C Review | 68 Data compared

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  • Avg. price in UK: ~£480
  • Avg. price in US: ~$500
  • Screen size: 10.3 inches
  • Battery life: 10 hours
  • Supported bookstore ecosystem: Android Open Ecosystem

Onyx Boox Note Air 3 C review. Compare 68 technical specifications and user reviews to see how it ranks among ereaders and if it is worth buying.

8.3

Overall score

What it is: An overall evaluation of the eReader's quality, based on technical analyses and user reviews.

When it matters: When you need a quick reference to identify the best eReaders on the market.

Score components:

90.0%

8.2

Technical Score

10.0%

8.7

User score

Excellent
8.2

Technical Score

What it is: An assessment of the eReader's technical performance, covering key areas such as display quality, reading features, battery life, format support, ecosystem, and design.

When it matters: When you want to compare eReaders based on technical performance and available features.

Score components:

25.0%

9.7

Display

22.0%

9.7

Reading

18.0%

5.3

Battery

14.0%

9.7

Hardware

12.0%

8.7

Connectivity

9.0%

3.4

Design

Excellent
8.7

User score

What it is: A rating that combines user reviews and the total number of reviews received by the eReader.

When it matters: When you want to know how an eReader feels in daily reading and how reliable it is for screen comfort, battery life, and library management according to user feedback.

Score components:

70.0%

8.1

User reviews

30.0%

10

Popularity

User score:
United States
Amazon_logo.png
4.1
(377)
United Kingdom
amazon
3.9
(360)
amazon
4.0
(357)
amazon
4.1
(17)

(Reviews last updated: Apr 2026)

Excellent
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    Best prices in UK

    Best rankings

    ?

    Available: ranking among products currently available (including other versions of this product).
    All: ranking among all products in the database.

    Verdict

    The Onyx Boox Note Air 3 C is a 10.3-inch e-ink tablet featuring a Kaleido 3 color display that delivers 300 PPI for black-and-white content and 150 PPI for color. It is powered by a 2.4 GHz octa-core processor, 4 GB of RAM, and 64 GB of internal storage, expandable up to 2 TB via microSD. Running on Android 12, it provides full access to the Google Play Store, allowing for a versatile app experience alongside its core note-taking and reading functions. Main pros include a premium magnesium-aluminum build, exceptionally responsive handwriting with the included 4,096-level pressure-sensitive stylus, and Boox Super Refresh (BSR) technology for smoother screen transitions. However, notable cons include significantly shorter battery life compared to monochrome e-readers (often requiring charging every 1–2 days), a darker base screen that frequently necessitates the use of the front light, and relatively weak onboard speakers.

    Technical Specifications of eReader Onyx Boox Note Air 3 C

    Technical Score

    What it is: An assessment of the eReader's technical performance, covering key areas such as display quality, reading features, battery life, format support, ecosystem, and design.

    When it matters: When you want to compare eReaders based on technical performance and available features.

    Score components:

    25.0%

    9.7

    Display

    22.0%

    9.7

    Reading

    18.0%

    5.3

    Battery

    14.0%

    9.7

    Hardware

    12.0%

    8.7

    Connectivity

    9.0%

    3.4

    Design

    8.2
    Onyx Boox Note Air 3 C has a technical score of 8.25 points, which is higher than that of 93.4% of products in this category.
    User score

    What it is: A rating that combines user reviews and the total number of reviews received by the eReader.

    When it matters: When you want to know how an eReader feels in daily reading and how reliable it is for screen comfort, battery life, and library management according to user feedback.

    Score components:

    70.0%

    8.1

    User reviews

    30.0%

    10

    Popularity

    User score:
    United States
    Amazon_logo.png
    4.1
    (377)
    United Kingdom
    amazon
    3.9
    (360)
    amazon
    4.0
    (357)
    amazon
    4.1
    (17)

    (Reviews last updated: Apr 2026)

    8.7
    Onyx Boox Note Air 3 C has a user score of 8.67 points, which is higher than that of 72.1% of products in this category.
    Popularity
    What it is: An indicator based on the number of reviews received by the eReader.
    When it matters: When you prefer to choose an eReader reviewed and selected by many other buyers.
    10
    Onyx Boox Note Air 3 C has a popularity of 10 points, which is higher than 70.5% of smartphones.
    Ratio quality/price

    What it is: An indicator that combines the eReader's overall rating with its cost.

    When it matters: When you are looking for an eReader with a good balance between reading comfort, features, and price.

    Score components:

    60.0%

    8.3

    Overall score

    40.0%

    8.0

    Price

    8.2
    Onyx Boox Note Air 3 C has a quality-to-price ratio of 8.2 points, which is higher than 81.2% of smartphones.
    Brand name
    What it is: Identifies the company or ecosystem behind the device, which often shapes the store, software approach, and accessory support.
    When it matters: When you are choosing between Kindle, Kobo, Boox, PocketBook, or another ecosystem with different store access and software behavior.

    Importance: MEDIUM

    Onyx
    Screen size
    What it is: The diagonal measurement of the reading panel, usually given in inches.
    When it matters: When you are deciding between a small travel reader and a larger page that works better for PDFs, comics, or textbooks.

    Importance: HIGH

    Good value: >=7.8

    10.3 inches
    Onyx Boox Note Air 3 C has a screen size of 10.3 inches which is larger than 86.9% of eReaders on this spec and equal to 11.5% of eReaders.
    Screen resolution
    What it is: The total pixel grid shown on the panel, normally written as width by height.
    When it matters: When small fonts, diagrams, or dense page layouts need to stay readable without constant zooming.

    Importance: HIGH

    1860x2480 px
    Onyx Boox Note Air 3 C uses a screen resolution of 1860x2480 px, which is sharper than that of 95.1% of eReaders and the same as that of 4.9% of eReaders.
    Pixel density
    What it is: The number of pixels packed into each inch of the display, expressed in ppi.
    When it matters: When you want text edges to look cleaner and serif fonts to resemble print more closely.

    Importance: HIGH

    Good value: >=300

    300 ppi
    Onyx Boox Note Air 3 C has a pixel density of 300 ppi which is higher than 51.6% of eReaders on this spec and equal to 48.4% of eReaders.
    150 ppi in color.
    E-paper display
    What it is: Uses an electrophoretic panel designed to mimic paper rather than a conventional backlit phone or tablet screen.
    When it matters: When you read for long stretches and want lower glare and less screen-like fatigue than on LCD or OLED devices.

    Importance: LOW

    yes
    Onyx Boox Note Air 3 C uses an e-paper display. 97.6% of eReaders have an e-paper display.
    Show more
    Supported file types
    What it is: Lists which ebook, document, image, or audio formats the reader can open without conversion.
    When it matters: When your library comes from mixed sources instead of one locked bookstore.

    Importance: HIGH

    ?
    PDF reflow support
    What it is: Can rearrange PDF text into a more readable, screen-sized layout instead of forcing the original fixed page.
    When it matters: When you read A4 documents, articles, or manuals on a smaller eReader screen.

    Importance: HIGH

    yes
    Onyx Boox Note Air 3 C offers PDF reflow. 55.4% of eReaders support PDF reflow.
    Annotation support
    What it is: Allows highlighting, handwritten notes, typed comments, or markup directly inside supported files.
    When it matters: When you study, review academic papers, or want your notes to stay attached to the exact passage.

    Importance: HIGH

    yes
    Onyx Boox Note Air 3 C offers annotation support. 100% of eReaders offer annotation support.
    Dictionary
    What it is: Provides built-in word lookup while you read.
    When it matters: When you read in another language or want quick definitions without leaving the page.

    Importance: MEDIUM

    yes
    Onyx Boox Note Air 3 C includes a built-in dictionary. 99.2% of eReaders include a built-in dictionary.
    Text-to-speech
    What it is: Converts on-screen text into spoken audio using a synthetic voice.
    When it matters: When you want to keep following a book while resting your eyes, walking, or multitasking.

    Importance: MEDIUM

    yes
    Onyx Boox Note Air 3 C offers text-to-speech. 64.2% of eReaders include text-to-speech.
    Show more
    Battery life
    What it is: Estimates how long the device can keep running between charges under normal reading conditions.
    When it matters: When you travel, commute, or want to finish books for days without thinking about charging.

    Importance: HIGH

    Good value: >=30

    10 hours
    Onyx Boox Note Air 3 C offers 10 hours of battery life which is shorter than 93.8% of eReaders on this spec and equal to 5% of eReaders.
    highly dependent on usage, faster drain with color screen BSR technology and frontlight
    Battery capacity
    What it is: The amount of energy the battery can store, commonly expressed in mAh.
    When it matters: When you want a rough hardware indicator of how much power reserve the device has.

    Importance: MEDIUM

    Good value: >=2000

    3,700 mAh
    Onyx Boox Note Air 3 C has a battery capacity of 3700 mAh which is higher than 87.5% of eReaders on this spec and equal to 4.2% of eReaders.
    Charging time
    What it is: The approximate time needed to recharge the battery from low to full.
    When it matters: When you often top up shortly before leaving and need the reader ready again quickly.

    Importance: MEDIUM

    Good value: <=3

    2 hours
    Onyx Boox Note Air 3 C takes 2 hours to charge which is quicker than 49% of eReaders on this spec and equal to 40.4% of eReaders.
    with 3A charger
    Wireless charging
    What it is: Can recharge on a compatible charging pad without plugging in a cable.
    When it matters: When you prefer drop-and-charge convenience on a desk or bedside stand.

    Importance: LOW

    no
    Onyx Boox Note Air 3 C does not offer wireless charging. 7.3% of eReaders offer wireless charging.
    Internal storage
    What it is: The built-in space available for books, notes, audiobooks, apps, and downloaded documents.
    When it matters: When you keep large libraries offline or store a lot of PDFs and audio locally.

    Importance: HIGH

    Good value: >=32

    64 GB
    Onyx Boox Note Air 3 C offers 64 GB of internal storage which is more than 82.2% of eReaders on this spec and equal to 11% of eReaders.
    RAM capacity
    What it is: The amount of working memory used for page rendering, multitasking, and keeping content active in the background.
    When it matters: When you open heavy files, switch between books, or expect the interface to stay snappy.

    Importance: MEDIUM

    Good value: >=2

    4 GB
    Onyx Boox Note Air 3 C offers 4 GB of RAM which is more than 86.6% of eReaders on this spec and equal to 10.1% of eReaders.
    CPU base clock speed
    What it is: The baseline operating frequency of the main processor under normal load.
    When it matters: When you compare readers for faster menu navigation, indexing, and handling of larger documents.

    Importance: MEDIUM

    8 x 2.4 GHz
    Onyx Boox Note Air 3 C has a CPU base clock speed of 8 x 2.4 GHz, which is faster than that of 96.7% of eReaders and the same as that of 2.5% of eReaders.
    Operating system
    What it is: The software platform that drives the interface, reading apps, and deeper system capabilities.
    When it matters: When you care about app availability, customization, and how flexible the device can become beyond basic reading.

    Importance: HIGH

    Android 12
    Onyx Boox Note Air 3 C runs Android 12, which is more advanced than that of 73.8% of eReaders and the same as that of 1.6% of eReaders.
    Android 12
    Memory card slot
    What it is: Accepts removable storage so the library can expand beyond the built-in capacity.
    When it matters: When your collection will outgrow internal storage or you move files between devices manually.

    Importance: MEDIUM

    yes
    Onyx Boox Note Air 3 C has a memory card slot. 43.1% of eReaders have a memory card slot.
    Show more
    Wi-Fi connectivity
    What it is: Connects the reader to wireless networks for book downloads, syncing, updates, and online services.
    When it matters: When you buy books directly on the device or keep your library synced without using a cable.

    Importance: HIGH

    yes
    Onyx Boox Note Air 3 C connects over Wi-Fi. 93.5% of eReaders have Wi-Fi.
    Wi-Fi version
    What it is: Specifies which wireless networking standard is supported, such as Wi-Fi 4, 5, or 6.
    When it matters: When router compatibility, wireless stability, or faster transfers on newer home networks matter to you.

    Importance: LOW

    Wi-Fi 5 (802.11ac), Wi-Fi 4 (802.11n)
    Onyx Boox Note Air 3 C supports Wi-Fi Wi-Fi 5 (802.11ac), Wi-Fi 4 (802.11n), which is newer than that of 58.2% of eReaders and the same as that of 40.2% of eReaders.
    Wi-Fi bands supported
    What it is: Shows whether the reader can use 2.4 GHz, 5 GHz, or both wireless bands.
    When it matters: When crowded apartment Wi-Fi or 5 GHz-only setups make band support matter at home or in the office.

    Importance: LOW

    2.4 GHz+5 GHz
    Onyx Boox Note Air 3 C supports 2.4 GHz+5 GHz Wi-Fi bands, which is broader than that of 57.4% of eReaders and the same as that of 42.6% of eReaders.
    Bluetooth
    What it is: Provides short-range wireless pairing for headphones, speakers, keyboards, page turners, or other accessories.
    When it matters: When you listen to audiobooks, use a remote page turner, or want cable-free accessories around the house.

    Importance: MEDIUM

    yes
    Onyx Boox Note Air 3 C connects over Bluetooth. 60.2% of eReaders have Bluetooth.
    Bluetooth version
    What it is: Identifies the supported Bluetooth generation, which affects efficiency, codec support, and compatibility.
    When it matters: When you pair newer headphones and want a more stable, lower-power wireless connection.

    Importance: LOW

    Good value: >=5.0

    5.0
    Onyx Boox Note Air 3 C supports Bluetooth 5.0 which is newer than 58.5% of eReaders on this spec and equal to 28.8% of eReaders.
    Show more
    Weight
    What it is: The mass of the device, usually measured in grams.
    When it matters: When one-handed comfort matters and you do not want the reader to feel tiring during long sessions.

    Importance: HIGH

    Good value: <=200

    430 g
    Onyx Boox Note Air 3 C weighs 430 g which is heavier than 83.6% of eReaders on this spec of eReaders.
    Thickness
    What it is: The depth of the body from front to back, usually measured in millimetres.
    When it matters: When grip comfort, sleeve fit, or how slim the reader feels in the hand matters to you.

    Importance: MEDIUM

    Good value: <=8

    5.8 mm
    Onyx Boox Note Air 3 C is 5.8 mm thick which is thinner than 91.7% of eReaders on this spec and equal to 5.8% of eReaders.
    Height
    What it is: The vertical size of the body, usually measured from top to bottom in millimetres.
    When it matters: When you are checking whether the reader will fit a bag, jacket pocket, or small stand.

    Importance: LOW

    Good value: <=160

    226 mm
    Onyx Boox Note Air 3 C is 226 mm tall which is taller than 79.5% of eReaders on this spec and equal to 2.5% of eReaders.
    Width
    What it is: The side-to-side body measurement, usually given in millimetres.
    When it matters: When one-handed reach and how much space the reader takes in a bag or bedside setup matter.

    Importance: LOW

    Good value: <=130

    193 mm
    Onyx Boox Note Air 3 C is 193 mm wide which is wider than 86.9% of eReaders on this spec and equal to 4.9% of eReaders.
    Water resistance (splashproof)
    What it is: Can tolerate light splashes, damp hands, or brief accidental contact with water.
    When it matters: When you read by the bath, at the pool, or outdoors where light moisture is realistic.

    Importance: MEDIUM

    no
    Onyx Boox Note Air 3 C does not have water resistance against splashes. 25% of eReaders have water resistance against splashes.
    Show more

    Onyx Boox Note Air 3 C vs the average eReader

    • 3.3 inches larger screen size
      Onyx Boox Note Air 3 C has a larger screen than the average eReader (10.3 inches vs 7 inches). The average eReader screen size is 7 inches.
      What it is: The diagonal measurement of the reading panel, usually given in inches.
      When it matters: When you are deciding between a small travel reader and a larger page that works better for PDFs, comics, or textbooks.

      Importance: HIGH

      Good value: >=7.8

      Onyx Boox Note Air 3 C has a larger screen than the average eReader (10.3 inches vs 7 inches). The average eReader screen size is 7 inches.10.3 inches vs 7 inches
    • 2.42x larger battery capacity
      Onyx Boox Note Air 3 C has a larger battery than the average eReader (3,700 mAh vs 1,530 mAh). The average eReader battery has a capacity of 1,530 mAh.
      What it is: The amount of energy the battery can store, commonly expressed in mAh.
      When it matters: When you want a rough hardware indicator of how much power reserve the device has.

      Importance: MEDIUM

      Good value: >=2000

      Onyx Boox Note Air 3 C has a larger battery than the average eReader (3,700 mAh vs 1,530 mAh). The average eReader battery has a capacity of 1,530 mAh.3,700 mAh vs 1,530 mAh
    • Higher screen resolution
      Onyx Boox Note Air 3 C supports higher screen resolution than the average eReader (1860x2480 px vs 1072x1448 px). The average eReader supports 1072x1448 px screen resolution.
      What it is: The total pixel grid shown on the panel, normally written as width by height.
      When it matters: When small fonts, diagrams, or dense page layouts need to stay readable without constant zooming.

      Importance: HIGH

      Onyx Boox Note Air 3 C supports higher screen resolution than the average eReader (1860x2480 px vs 1072x1448 px). The average eReader supports 1072x1448 px screen resolution.1860x2480 px vs 1072x1448 px
    • 4x more storage
      Onyx Boox Note Air 3 C offers more internal storage than the average eReader (64 GB vs 16 GB). The average eReader provides 16 GB of internal storage.
      What it is: The built-in space available for books, notes, audiobooks, apps, and downloaded documents.
      When it matters: When you keep large libraries offline or store a lot of PDFs and audio locally.

      Importance: HIGH

      Good value: >=32

      Onyx Boox Note Air 3 C offers more internal storage than the average eReader (64 GB vs 16 GB). The average eReader provides 16 GB of internal storage.64 GB vs 16 GB
    • Has color display
      Onyx Boox Note Air 3 C has a color display, while the average eReader does not.
      What it is: Shows color instead of grayscale only, usually through a color E Ink panel with more muted tones than LCD or OLED screens.
      When it matters: When you read comics, illustrated books, magazines, or documents that rely on color-coded charts and highlights.

      Importance: MEDIUM

      Onyx Boox Note Air 3 C has a color display, while the average eReader does not.
    • Supports handwriting recognition
      Onyx Boox Note Air 3 C supports handwriting recognition, while the average eReader does not.
      Built-in handwriting-to-text support.
      What it is: Can convert handwritten pen input into editable digital text.
      When it matters: When you write notes by hand and want them searchable, cleaner, or easier to export later.

      Importance: MEDIUM

      Onyx Boox Note Air 3 C supports handwriting recognition, while the average eReader does not.
    • 3.49 GB more RAM
      Onyx Boox Note Air 3 C has more RAM than the average eReader (4 GB vs 0.512 GB). The average eReader has 0.512 GB of RAM.
      What it is: The amount of working memory used for page rendering, multitasking, and keeping content active in the background.
      When it matters: When you open heavy files, switch between books, or expect the interface to stay snappy.

      Importance: MEDIUM

      Good value: >=2

      Onyx Boox Note Air 3 C has more RAM than the average eReader (4 GB vs 0.512 GB). The average eReader has 0.512 GB of RAM.4 GB vs 0.512 GB
    • Faster CPU base clock speed
      Onyx Boox Note Air 3 C has a faster CPU base clock speed than the average eReader (8x2.4 GHz vs 1x1 GHz). The average eReader has a CPU base clock speed of 1x1 GHz.
      What it is: The baseline operating frequency of the main processor under normal load.
      When it matters: When you compare readers for faster menu navigation, indexing, and handling of larger documents.

      Importance: MEDIUM

      Onyx Boox Note Air 3 C has a faster CPU base clock speed than the average eReader (8x2.4 GHz vs 1x1 GHz). The average eReader has a CPU base clock speed of 1x1 GHz.8x2.4 GHz vs 1x1 GHz
    • 3.3 inches larger screen size
      Onyx Boox Note Air 3 C has a larger screen than the average eReader (10.3 inches vs 7 inches). The average eReader screen size is 7 inches.
    • Higher screen resolution
      Onyx Boox Note Air 3 C supports higher screen resolution than the average eReader (1860x2480 px vs 1072x1448 px). The average eReader supports 1072x1448 px screen resolution.
    • Has color display
      Onyx Boox Note Air 3 C has a color display, while the average eReader does not.
    • More advanced E-Ink technology
      Onyx Boox Note Air 3 C uses Kaleido 3 E-Ink technology, while the average eReader uses Carta Plus.
    • 13.2% higher pixel density
      Onyx Boox Note Air 3 C has a higher pixel density than the average eReader (300 ppi vs 265 ppi). The average eReader has a pixel density of 265 ppi.
    • Supports auto-rotate
      Onyx Boox Note Air 3 C supports auto-rotate, while the average eReader does not.
    • Supports handwriting recognition
      Onyx Boox Note Air 3 C supports handwriting recognition, while the average eReader does not.
    • Supports stylus
      Onyx Boox Note Air 3 C supports a stylus, while the average eReader does not.
    • Broader library support
      Onyx Boox Note Air 3 C supports more library lending platforms than the average eReader (OverDrive, Libby, Hoopla, BorrowBox, cloudLibrary vs OverDrive, Libby).
    • Includes stylus
      Onyx Boox Note Air 3 C includes a stylus, while the average eReader does not.
    • 2.42x larger battery capacity
      Onyx Boox Note Air 3 C has a larger battery than the average eReader (3,700 mAh vs 1,530 mAh). The average eReader battery has a capacity of 1,530 mAh.
    • 4x more storage
      Onyx Boox Note Air 3 C offers more internal storage than the average eReader (64 GB vs 16 GB). The average eReader provides 16 GB of internal storage.
    • Includes memory card slot
      Onyx Boox Note Air 3 C includes a memory card slot, while the average eReader does not.
    • 3.49 GB more RAM
      Onyx Boox Note Air 3 C has more RAM than the average eReader (4 GB vs 0.512 GB). The average eReader has 0.512 GB of RAM.
    • Faster CPU base clock speed
      Onyx Boox Note Air 3 C has a faster CPU base clock speed than the average eReader (8x2.4 GHz vs 1x1 GHz). The average eReader has a CPU base clock speed of 1x1 GHz.
    • Has accelerometer
      Onyx Boox Note Air 3 C has an accelerometer, while the average eReader does not.
    • More advanced operating system
      Onyx Boox Note Air 3 C uses Android 12, a more advanced operating system than Kindle OS on the average eReader.
    • Has fingerprint scanner
      Onyx Boox Note Air 3 C has a fingerprint scanner, while the average eReader does not.
    • Has microphone
      Onyx Boox Note Air 3 C has a microphone, while the average eReader does not.
    • Supports USB OTG
      Onyx Boox Note Air 3 C supports USB OTG, while the average eReader does not.
    • 2 more speakers
      Onyx Boox Note Air 3 C has more speakers than the average eReader (2 vs 0). The average eReader has 0 speakers.
    • Better Wi-Fi bands
      Onyx Boox Note Air 3 C supports 2.4 GHz+5 GHz Wi-Fi bands, while the average eReader supports 2.4 GHz.
    • 2.3 mm thinner
      Onyx Boox Note Air 3 C is thinner than the average eReader (5.8 mm vs 8.1 mm). The average eReader thickness is 8.1 mm.
    • 2 year/s newer release date
      Onyx Boox Note Air 3 C is newer than the average eReader (2023 vs 2021). The average eReader was released in 2021.

    Total
    Overall
    Display
    Reading
    Battery
    Hardware
    Connectivity
    Design
    • 11 hours shorter battery life
      Onyx Boox Note Air 3 C offers shorter battery life than the average eReader (10 hours vs 21 hours). The average eReader offers 21 hours of battery life.
      highly dependent on usage, faster drain with color screen BSR technology and frontlight
    • Older Bluetooth version
      Onyx Boox Note Air 3 C supports an older Bluetooth version than the average eReader (5 vs 5.1).
    • 2.02x heavier
      Onyx Boox Note Air 3 C is heavier than the average eReader (430 g vs 213 g). The average eReader weighs 213 g.
    • 65.4 mm wider
      Onyx Boox Note Air 3 C is wider than the average eReader (193 mm vs 127.6 mm). The average eReader width is 127.6 mm.
    • 53 mm taller
      Onyx Boox Note Air 3 C is taller than the average eReader (226 mm vs 173 mm). The average eReader height is 173 mm.
    • 11 hours shorter battery life
      Onyx Boox Note Air 3 C offers shorter battery life than the average eReader (10 hours vs 21 hours). The average eReader offers 21 hours of battery life.
      highly dependent on usage, faster drain with color screen BSR technology and frontlight
      What it is: Estimates how long the device can keep running between charges under normal reading conditions.
      When it matters: When you travel, commute, or want to finish books for days without thinking about charging.

      Importance: HIGH

      Good value: >=30

      Onyx Boox Note Air 3 C offers shorter battery life than the average eReader (10 hours vs 21 hours). The average eReader offers 21 hours of battery life.10 hours vs 21 hours
    • 2.02x heavier
      Onyx Boox Note Air 3 C is heavier than the average eReader (430 g vs 213 g). The average eReader weighs 213 g.
      What it is: The mass of the device, usually measured in grams.
      When it matters: When one-handed comfort matters and you do not want the reader to feel tiring during long sessions.

      Importance: HIGH

      Good value: <=200

      Onyx Boox Note Air 3 C is heavier than the average eReader (430 g vs 213 g). The average eReader weighs 213 g.430 g vs 213 g
    • 65.4 mm wider
      Onyx Boox Note Air 3 C is wider than the average eReader (193 mm vs 127.6 mm). The average eReader width is 127.6 mm.
      What it is: The side-to-side body measurement, usually given in millimetres.
      When it matters: When one-handed reach and how much space the reader takes in a bag or bedside setup matter.

      Importance: LOW

      Good value: <=130

      Onyx Boox Note Air 3 C is wider than the average eReader (193 mm vs 127.6 mm). The average eReader width is 127.6 mm.193 mm vs 127.6 mm
    • 53 mm taller
      Onyx Boox Note Air 3 C is taller than the average eReader (226 mm vs 173 mm). The average eReader height is 173 mm.
      What it is: The vertical size of the body, usually measured from top to bottom in millimetres.
      When it matters: When you are checking whether the reader will fit a bag, jacket pocket, or small stand.

      Importance: LOW

      Good value: <=160

      Onyx Boox Note Air 3 C is taller than the average eReader (226 mm vs 173 mm). The average eReader height is 173 mm.226 mm vs 173 mm
    • 2.82x more expensive
      Onyx Boox Note Air 3 C is more expensive than the average eReader (£480 vs £170).
      Onyx Boox Note Air 3 C is more expensive than the average eReader (£480 vs £170).£480 vs £170
    • Older Bluetooth version
      Onyx Boox Note Air 3 C supports an older Bluetooth version than the average eReader (5 vs 5.1).
      What it is: Identifies the supported Bluetooth generation, which affects efficiency, codec support, and compatibility.
      When it matters: When you pair newer headphones and want a more stable, lower-power wireless connection.

      Importance: LOW

      Good value: >=5.0

      Onyx Boox Note Air 3 C supports an older Bluetooth version than the average eReader (5 vs 5.1).5.0 vs 5.1
    Total
    Overall
    Battery
    Connectivity
    Design

    Graphic comparison of Onyx Boox Note Air 3 C and other eReaders

    Attribute category
    Attribute
    No results found

    Third-party reviews

    United States
    Amazon_logo.png
    4.1
    377 Reviews
    United Kingdom
    amazon
    3.9
    360 Reviews
    amazon
    4.0
    357 Reviews
    amazon
    4.1
    17 Reviews

    (Reviews last updated: Apr 2026)

    What customers like about Onyx Boox Note Air 3 C?

    • Versatile Android 12 OS with full Google Play Store access for third-party apps
    • Excellent paper-like writing experience with low latency and textured screen
    • Kaleido 3 color E-ink display is ideal for comics, textbooks, and color-coded notes
    • Boox Super Refresh (BSR) technology significantly reduces ghosting and improves smoothness
    • Premium, slim, and durable aluminum build quality with a built-in fingerprint sensor
    • Includes a microSD card slot for expandable storage up to 2TB
    • Effective dual-tone front light with adjustable warm and cool temperatures

    What customers dislike about Onyx Boox Note Air 3 C?

    • Battery life is significantly shorter than monochrome e-readers (often only 2-3 days)
    • Color screen is inherently darker and less contrasty than black-and-white models
    • Included stylus (Pen 2 Plus) lacks a physical eraser, which requires a separate upgrade
    • Weak and tinny onboard speakers that lack bass and detail
    • Handwriting and advanced annotation features are often limited to native apps
    • E-ink technology remains unsuitable for high-frame-rate video or intensive gaming
    • No official IP rating for water or dust resistance

    Expert reviews

    P
    pcmag.com
    26/02/2024
    Onyx Boox Note Air 3 C Review - PCMag

    The Onyx Boox Note Air 3 C is a 10.3-inch color E Ink tablet featuring a Kaleido 3 display (300ppi grayscale/150ppi color) that excels at displaying, comics, and academic documents with natural, muted colors. Its premium aluminum-magnesium build, highly responsive stylus, and full Google Play Store access make it a versatile tool for taking notes and utilizing various reading apps....Read more

    T
    trustedreviews.com
    30/01/2024
    Onyx Boox Air 3 C Review

    The Onyx Boox Note Air 3 C is a premium 10.3-inch E Ink tablet featuring a 5.3mm-thick aluminum design with an asymmetrical grip. Key pros include Android-powered versatility with Google Play Store access and a responsive, textured screen for note-taking. However, its high price tag acts as a significant con, positioning it against mainstream tablets like the iPad. Utilizing Kaleido...Read more

    N
    notebookcheck.net
    18/11/2023
    Onyx Boox Note Air 3 C review - E-Ink tablet with color display, stylus support and Android - NotebookCheck

    The Onyx Boox Note Air 3 C is a 10.3-inch E Ink tablet featuring a high-quality, slim magnesium-aluminum chassis and a Kaleido 3 color display, running Android 12 with full Google Play Store access. Key strengths include a natural writing experience, robust app versatility, and a fingerprint sensor, though the screen's color resolution drops to 150 PPI and it exhibits some ghosting....Read more

    G
    galaxus.at
    03/04/2024
    Onyx Boox Note Air 3C review: e-reader with colour display and stylus - Galaxus Would you like a comparison of the battery life or screen contrast ben...

    The Onyx Boox Note Air 3C is a 10.3-inch E Ink tablet running Android 12, featuring a 6mm magnesium-alloy design and a "Boox Super Refresh" interface for, as noted in the Galaxus review, a, thin, portable experience. The Kaleido 3 colour display is ideal for comics, yet offers paler colors than smartphones, with slow response times and ghosting, making it unsuitable for video or...Read more

    E
    ewritable.net
    12/12/2024
    Boox Note Air3 C Review - eWritable

    The Onyx Boox Note Air3 C is a 10.3-inch color e-ink tablet featuring a durable metallic design, an open Android 12 OS, and a Kaleido 3 display with 300 PPI monochrome/150 PPI color resolution. Its Boox Super Refresh (BSR) technology and GPU ensure smooth performance for reading, note-taking, and app usage, complemented by a tactile paper-like screen surface. Key trade-offs include...Read more

    L
    lifewire.com
    09/02/2025
    Boox Note Air3 C: The Perfect Tablet for Digital Note-Takers? - Lifewire

    The Onyx Boox Note Air3 C is a 10.3-inch E Ink tablet offering a premium, lightweight, and paper-like writing experience, featuring a color screen that displays muted, newspaper-style hues. It boasts full Google Play Store access, a stylus with no charging required, microSD storage, and excellent battery life, though it suffers from slow boot-up times. Despite advantages, the device...Read more

    W
    whatsthebest.co.uk
    29/01/2025
    An elite-reader: Onyx BOOX Note Air 3 C Review - What's The Best

    The Onyx Boox Note Air 3 C features a 10.3-inch Kaleido 3 color display, offering a responsive, paper-like experience with reduced eye strain compared to traditional tablets. Pros include a natural writing experience and versatile Android 12 with Google Play access, though the device lacks waterproofing and suffers from poor battery life due to the color screen. Retailing around...Read more

    P
    pocket-lint.com
    27/09/2024
    Onyx Boox Note Air 3 C review: A well-rounded color E Ink tablet - Pocket-lint

    The Onyx Boox Note Air 3 C is a 10.3-inch color E Ink tablet featuring a Kaleido 3 screen and Android 12, allowing for versatile app usage via the Google Play Store. The device is lauded for its premium, 5.8mm aluminum design, textured writing surface, 300 PPI monochrome resolution, and expandable storage. Notable disadvantages include dull, muted color display quality, poor battery...Read more

    A
    androidpolice.com
    20/12/2023
    Onyx Boox Note Air 3C review: Filling the void between tablet and e-reader - Android Police

    The Onyx Boox Note Air 3C is a 10.3-inch E Ink tablet featuring a Kaleido 3 color screen that bridges the gap between an e-reader and an Android tablet. Its premium 5.8mm aluminum-magnesium alloy design includes a textured screen for a paper-like writing experience. Key advantages include running Android 12 with full Google Play Store access,Boox Super Refresh technology for reduced...Read more

    C
    computerbild.de
    26/03/2024
    Onyx Boox Note Air 3C Review

    The Onyx Boox Note Air 3 C features a 10.3-inch Kaleido 3 color E Ink display and runs Android 12, offering a versatile experience for reading, note-taking, and app usage. Key advantages include a slim 5.8mm metal chassis, a "paper-like" writing experience with the included stylus, high-resolution text, and expandable microSD storage. Drawbacks include shorter battery life due to...Read more

    (Translated)Show original
    G
    galaxus.de
    03/04/2024
    Color E-Reader with Stylus: Onyx Boox Note Air 3C Review

    The Onyx Boox Note Air 3C is described by Galaxus as a versatile 10.3-inch device combining an e-reader with a digital notepad, featuring a Kaleido 3 colour display suitable for comics and sketches. While praising its thin, portable build, the review notes the color screen is paler than a smartphone. Key advantages include the open Android 12 operating system for third-party apps, a...Read more

    (Translated)Show original
    N
    netzwelt.de
    24/03/2024
    Onyx Boox Note Air 3 C Review: Can This eReader Tablet Take on the iPad?

    The Onyx Boox Note Air 3 C is a 10.3-inch E-Ink tablet featuring a Kaleido 3 color display and Android 12, aimed at professionals needing a versatile device for document annotation and, with the Google Play Store, providing access to a wide range of apps. Key strengths include a premium magnesium-aluminum design, a responsive Wacom stylus with a paper-like feel, and a capable...Read more

    (Translated)Show original
    D
    digitec.ch
    03/04/2024
    A color screen e-reader with a stylus: Onyx Boox Note Air 3C review

    The Onyx Boox Note Air 3C is a versatile 10.3-inch E Ink tablet featuring a Kaleido 3 colour display, Android 12 with Google Play Store access, and a 6mm thin, lightweight design. Its strengths include a natural, paper-like writing experience, a long-lasting battery, and robust storage options including a microSD slot. However, potential drawbacks include a high price point, muted...Read more

    (Translated)Show original
    G
    galaxus.fr
    03/04/2024
    A color screen e-reader with a stylus: testing the Onyx Boox Note Air 3C

    The Onyx Boox Note Air 3C is a 10.3-inch E-ink tablet featuring a Kaleido 3 colour display (4,096 colors), offering a paper-like, 6mm thin, and portable reading experience suitable for comics and annotated PDFs. It excels in note-taking with a Wacom-powered stylus, a natural writing surface, and Android 12, allowing for third-party app access. However, the device is costly and...Read more

    (Translated)Show original
    L
    liseuses.net
    09/07/2024
    Onyx Boox Note Air3 C Review: A Luxurious and Full-Featured Color E-Reader

    The Onyx Boox Note Air3 C is a premium 10.3-inch E Ink tablet utilizing a Kaleido 3 color display, designed to bridge the gap between note-taking and multimedia consumption. Encased in a durable magnesium-aluminum alloy, it offers a tactile, paper-like writing experience with the included stylus and features BSR technology for reduced screen lag. Key strengths include superior...Read more

    (Translated)Show original
    Z
    zdnet.fr
    13/06/2024
    Boox Note Air 3 C Review: This E-Ink Tablet Rivals Both ReMarkable and Kindle

    The BOOX Note Air 3 C is a 10.3-inch E Ink tablet running Android 12, offering significantly more flexibility than competitors like the reMarkable 2 by providing Google Play Store access. Featuring a Kaleido 3 color screen, it excels in productivity, note-taking, and color-coded document annotation, supported by a durable magnesium-aluminum chassis. While praised for its natural...Read more

    (Translated)Show original
    B
    blablahightech.fr
    21/08/2024
    BOOX Note Air 3C: My review of this color e-ink tablet

    The Onyx Boox Note Air 3C is a premium 10.3-inch E Ink tablet featuring a Kaleido 3 color display and an open Android 12 ecosystem, housed in a durable 5.8mm magnesium-aluminum alloy chassis. It stands out for its excellent note-taking experience, utilizing a matte screen and stylus for a paper-like feel, enhanced by Boox Super Refresh (BSR) technology for smoother, faster visual...Read more

    (Translated)Show original
    J
    journaldugeek.com
    31/07/2024
    Onyx Boox Note Air 3C Color E-Reader Review: It Has It All

    The Onyx Boox Note Air 3C is a versatile 10.3-inch e-ink tablet featuring a Kaleido 3 color display, premium aluminum design, and exceptional note-taking capabilities via Wacom technology. Running Android 12 with Google Play Store access, it offers high flexibility for apps and includes a microSD slot. While lauded for functionality, the device features a high price point and muted...Read more

    (Translated)Show original
    L
    larazon.es
    17 de mayo de 2024
    Boox Note Air3 C Review: Android and Color E-Ink in Tablet Format

    The Onyx Boox Note Air3 C is a 10.3-inch, Android-based color E-Ink tablet featuring a high-quality Kaleido 3 display (300 PPI B&W, 150 PPI color) in a 5.8mm magnesium alloy body. It excels in note-taking with a natural stylus feel and provides a responsive interface thanks to BSR technology, plus it offers expandable storage via microSD. However, the color filter necessitates...Read more

    (Translated)Show original
    E
    educaciontrespuntocero.com
    11 de julio de 2024
    Testing the BOOX Note Air 3 C: It’s not a tablet and it’s not an eReader

    The BOOX Note Air 3 C, as reviewed by Educación 3.0, is a versatile 10.3-inch hybrid device featuring a Kaleido 3 color ePaper screen that provides a comfortable reading experience, though colors appear muted compared to standard LED screens. It operates on Android 12, allowing access to the Google Play Store for productivity apps, while supporting a "paper-like" writing experience...Read more

    (Translated)Show original
    T
    techandising.com
    04 de noviembre de 2024
    Boox Note Air3 C Review | Techandising

    The Onyx Boox Note Air 3 C is a 10.3-inch color E Ink tablet featuring a Kaleido 3 display (300 PPI B&W, 150 PPI color) that bridges the gap between e-readers and Android tablets. Pros include a premium, durable build, Android 12 with Google Play Store access, and a highly responsive paper-like writing experience. Cons include muted color saturation compared to LCDs, a darker screen...Read more

    (Translated)Show original
    L
    letemsvetemapplem.eu
    07/09/2024
    Boox Note Air 3C Review: Much More Than Just an E-Reader

    The Onyx Boox Note Air 3C is a versatile 10.3-inch E Ink tablet featuring a Kaleido 3 color display and Android 12, offering broad app access via the Google Play Store. It excels in note-taking with a natural, paper-like writing experience, a pressure-sensitive stylus, and Boox Super Refresh (BSR) technology within a durable, premium magnesium-aluminum chassis. While praised for...Read more

    (Translated)Show original
    I
    ilfattoquotidiano.it
    21/10/2024
    Onyx Boox Note Air 3C review: a solid and functional color E-ink tablet

    The Onyx Boox Note Air 3C is presented as a versatile, premium-built e-ink tablet featuring a durable magnesium-aluminum alloy chassis and a Kaleido 3 color screen. Key strengths include an enhanced note-taking experience with the stylus and Android 12, allowing for app installations via the Google Play Store. However, the device faces limitations with shorter battery life due to...Read more

    (Translated)Show original
    T
    techprincess.it
    04/08/2024
    BOOX Note Air3 C Review: A Complete Color E-Ink Tablet

    The BOOX Note Air3 C is a 10.3-inch E Ink tablet featuring a Kaleido 3 color screen, offering 4,096 colors for enhanced highlighting, charting, and sketching capabilities. Designed for productivity, it features a durable, slim aluminum chassis with BSR technology that significantly reduces ghosting while providing a paper-like writing experience via its responsive stylus. Pros...Read more

    (Translated)Show original
    I
    ilsole24ore.com
    18/12/2023
    Boox Note Air 3C: a digital reader like no other

    The Onyx Boox Note Air 3C, as reviewed by Il Sole 24 Ore, is a versatile 10.3-inch hybrid device running Android 12, offering extensive app access via the Google Play Store for reading and productivity. Featuring a Kaleido 3 colour e-paper screen, it provides 300 PPI for black-and-white text and a functional 150 PPI for color, while its textured surface delivers a superior,...Read more

    (Translated)Show original
    C
    charlestech.fr
    19 Novembre 2024
    Boox Note Air 3C Review: A Complete and Detailed Hands-on

    The Boox Note Air 3C is a high-end, 10.3-inch E-Ink tablet featuring a durable, slim design and a 300 PPI Kaleido 3 color screen that excels in reading, note-taking, and app usage. Powered by Android 12 with access to the Google Play Store, it offers high versatility with responsive, paper-like writing via a Wacom layer and specialized screen refreshing for smoother navigation. Key...Read more

    (Translated)Show original
    X
    xiaomitoday.it
    4 Luglio 2024
    Boox Note Air3 C Review: A Brilliant Color E-Reader Powered by Android

    The Boox Note Air3 C, as reviewed by XiaomiToday, is described as a high-performance hybrid device merging e-reader capabilities with Android 12 functionality, featuring a 10.3-inch Kaleido 3 color screen, a premium 5.8mm aluminum chassis, a MicroSD slot, and a secure fingerprint sensor. Key pros highlighted include excellent note-taking with a paper-like stylus feel and superior...Read more

    (Translated)Show original
    G
    galaxus.it
    03/04/2024
    Onyx Boox Note Air 3C Review: Color E-Reader with Stylus Support

    The Onyx Boox Note Air 3C is reviewed as a versatile hybrid device, combining a 10.3-inch Kaleido 3 E Ink display with a 6mm aluminum-magnesium chassis for a superior, paper-like note-taking experience. Running on Android 12, the device offers extensive app compatibility for productivity and reading, although it is ultimately deemed a high-priced "tinkerer’s delight" best suited for...Read more

    (Translated)Show original
    G
    gadgetgear.nl
    01/12/2024
    Review: Boox Note Air3 C e-reader with stylus

    The Onyx Boox Note Air3 C is a 10.3-inch E Ink tablet featuring a Kaleido 3 color display and a premium metal chassis, offering a "print-like" experience suitable for comics and PDFs, as well as natural handwriting with its stylus. Pros include open Android access to the Google Play Store for apps like Kindle, a responsive writing surface with 4,096 pressure levels, and expandable...Read more

    (Translated)Show original
    C
    coolesuggesties.nl
    26/06/2024
    Onyx Boox Note Air3 C E-Ink Tablet Review

    The CooleSuggesties review praises the Onyx Boox Note Air3 C as a versatile 10.3-inch E Ink tablet featuring a Kaleido 3 color screen, ideal for comics, manga, and PDF annotation. Key advantages include its premium 5.8mm aluminum-magnesium build, the open Android 12 OS allowing for extensive app installation, a natural writing experience with the included stylus, and functional...Read more

    (Translated)Show original
    A
    androidworld.nl
    21/08/2024
    Boox Note Air 3 C review: robust library and notepad in one

    The Onyx Boox Note Air 3 C is a versatile 10.3-inch e-ink tablet featuring a premium magnesium-aluminum alloy chassis and a Kaleido 3 color display (300 PPI B&W, 150 PPI color). It runs Android 12 with full Google Play Store access and provides a highly responsive "paper-like" writing experience with its Wacom stylus. Additional highlights include a fingerprint sensor and a microSD...Read more

    (Translated)Show original
    L
    letemsvetemapplem.eu
    07/09/2024
    Boox Note Air 3C review: Much more than just a...

    The Onyx Boox Note Air 3C is reviewed as a versatile hybrid device bridging e-readers and tablets, excelling in note-taking and document handling rather than direct iPad replacement. Key pros include a high-resolution 10.3-inch Kaleido 3 color display and fast page refreshes, housed in a thin, 430g aluminum-magnesium alloy body with an ergonomic, grippy design. While the adjustable...Read more

    (Translated)Show original

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