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ASUS S1 Review | 85 Data compared

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  • Avg. price in UK: ~£280
  • Avg. price in US: ~$320
  • ANSI lumens: 200
  • Native panel resolution: 854x480
  • Throw ratio: 1.1:1

ASUS S1 review. Compare 85 technical specifications and user reviews to see how it ranks among projectors and if it is worth buying.

3.9

Overall score

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

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

Score components:

90.0%

3.4

Technical Score

10.0%

8.9

User score

Poor
3.4

Technical Score

What it is: An assessment of the projector's technical performance, covering eight key areas: image quality, brightness, contrast, connectivity, gaming features, smart features, audio, and design.

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

Score components:

42.0%

3.3

Image Quality

22.0%

3.1

Projection & Lens

12.0%

4.3

HDMI & Gaming

10.0%

2.0

Audio & Features

8.0%

2.1

Connectivity

6.0%

6.9

Design & Power

Poor
8.9

User score

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

When it matters: When you want to know how a projector performs in real use and how reliable it remains over time according to user feedback.

Score components:

70.0%

8.4

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.2
(325)
amazon
4.3
(43)

(Reviews last updated: June 2026)

Excellent
  • 4.7
    Gaming

    Score components:

    35.0%

    9.2

    Input lag

    25.0%

    1.0

    Refresh rate

    20.0%

    5.1

    Output Resolution

    10.0%

    1.0

    HDR10 support

    10.0%

    1.0

    Audio output power

  • 5.6
    Portable

    Score components:

    35.0%

    10

    Weight

    20.0%

    ?

    Has A Built-In Speaker

    15.0%

    1.0

    Bluetooth connectivity

    15.0%

    1.0

    Wi-Fi connectivity

    15.0%

    1.0

    Smart TV features

  • 2.7
    Home theatre

    Score components:

    30.0%

    5.1

    Output Resolution

    25.0%

    1.0

    HDR10 support

    20.0%

    1.0

    Dolby Vision support

    15.0%

    1.0

    ANSI lumens

    10.0%

    5.8

    Audible noise

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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 Asus S1 is an ultra-portable LED projector featuring a native resolution of 854x480 pixels and a maximum brightness of 200 lumens. Weighing only 0.75 lbs with a compact 1.2-inch profile, it includes a built-in 6,000mAh battery that provides up to 3 hours of projection and doubles as a power bank for mobile devices. Key characteristics include a best-in-class short-throw ratio capable of projecting a 41-inch image from just 1 meter, a long-lasting 30,000-hour LED light source, and HDMI/MHL connectivity for seamless mobile device integration. Its main pros are its premium aluminum design, exceptional portability, and surprisingly low input lag of 16.6ms, which is beneficial for gaming. However, its notable cons include limited connection ports, soft audio from the single 2W speaker, and a low resolution that can make small text difficult to read.

Technical Specifications of ASUS S1

Technical Score

What it is: An assessment of the projector's technical performance, covering eight key areas: image quality, brightness, contrast, connectivity, gaming features, smart features, audio, and design.

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

Score components:

42.0%

3.3

Image Quality

22.0%

3.1

Projection & Lens

12.0%

4.3

HDMI & Gaming

10.0%

2.0

Audio & Features

8.0%

2.1

Connectivity

6.0%

6.9

Design & Power

3.4
ASUS S1 has a technical score of 3.37 points, which is lower than 100% of projectors.
User score

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

When it matters: When you want to know how a projector performs in real use and how reliable it remains over time according to user feedback.

Score components:

70.0%

8.4

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.2
(325)
amazon
4.3
(43)

(Reviews last updated: June 2026)

8.9
ASUS S1 has a user score of 8.9 points, which is higher than 89.6% of projectors.
Popularity
What it is: An indicator based on the number of reviews received by the projector.
When it matters: When you prefer to buy a product chosen and reviewed by many other consumers.
10
ASUS S1 has a popularity of 10 points, which is higher than 83.9% of products in this category.
Ratio quality/price

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

When it matters: When you are looking for a projector with a good balance between quality and price.

Score components:

60.0%

3.9

Overall score

40.0%

9.0

Price

5.5
ASUS S1 has a quality-to-price ratio of 5.5 points, which is lower than 69.7% of products in this category.
ANSI lumens
What it is: Brightness output measured in ANSI lumens.
When it matters: When you watch with ambient light or on a large screen, higher brightness matters.

Importance: HIGH

200
ASUS S1 reaches 200 ANSI lumens, dimmer than 93.7% of projectors and equal to 2.5% of projectors.
Contrast ratio
What it is: Ratio of brightest white to darkest black displayed by the projector.
When it matters: When you watch movies in a dark room, stronger contrast matters.

Importance: HIGH

1,000:1
ASUS S1 has a contrast ratio of 1000:1, lower than 85.5% of projectors and equal to 7.8% of projectors.
Dynamic contrast ratio.
Native panel resolution
What it is: Native resolution of the display panel or imaging device.
When it matters: When picture sharpness matters enough that you want to know the projector's true native imaging resolution, not just supported input formats.

Importance: HIGH

854x480
ASUS S1 uses a native resolution of 854x480, lower than 95.1% of projectors and equal to 2.4% of projectors.
Output Resolution
What it is: The resolution the projector can actually display through its imaging system.
When it matters: When you want to know the actual image detail the projector can put on screen rather than just the source format it accepts.

Importance: HIGH

854x480
ASUS S1 supports output resolution up to 854x480, lower than 95.3% of projectors and equal to 2.4% of projectors.
Projection technology
What it is: Projection imaging technology used by the projector.
When it matters: When color character, contrast behavior, and overall image personality matter before you compare brightness alone.

Importance: MEDIUM

DLP
Show more
Throw ratio
What it is: Ratio between projection distance and image width.
When it matters: When room size and screen size have to match properly instead of guessing whether the projector will fit the space.

Importance: MEDIUM

1.1:1
Min throw distance
What it is: Minimum distance required between projector and screen.
When it matters: When room depth is limited and you still need a large image from a short placement distance.

Importance: MEDIUM

0.73 m
ASUS S1 needs a minimum throw distance of 0.73 m, shorter than 78.6% of projectors.
Max projection size
What it is: Maximum supported image size for projection, measured diagonally.
When it matters: When you want a cinema-size picture, maximum projection size matters.

Importance: MEDIUM

100 inch
ASUS S1 supports projection sizes up to 100 inch, smaller than 92.4% of projectors and equal to 6.6% of projectors.
Zoom ratio
What it is: Optical zoom capability expressed as a ratio.
When it matters: When projector placement is not ideal and you need optical zoom to frame the image correctly.

Importance: MEDIUM

N/A
Motorized zoom
What it is: Motorized control of the optical zoom function.
When it matters: When the projector position is fixed but screen size or framing still needs to be adjusted from a distance.

Importance: LOW

no
ASUS S1 does not have motorized zoom. 16.3% of projectors have motorized zoom.
Show more
Input lag
What it is: Time delay between input signal and displayed image, measured in milliseconds.
When it matters: When gaming responsiveness matters and you want controls to feel more immediate on fast titles.

Importance: MEDIUM

16.6 ms
ASUS S1 has input lag of 16.6 ms, lower than 72.6% of projectors.
Auto low latency mode (ALLM)
What it is: Automatically reduces input lag when gaming.
When it matters: When you play fast games, lower latency matters.

Importance: LOW

no
ASUS S1 does not support ALLM. 20.3% of projectors support ALLM.
Variable refresh rate (VRR)
What it is: Support for variable refresh rate to reduce screen tearing.
When it matters: When gaming matters and you want the projector to handle variable frame rates with less tearing or stutter.

Importance: LOW

no
ASUS S1 does not support VRR. 1.9% of projectors support VRR.
HDMI version
What it is: Version of the HDMI standard supported.
When it matters: When source devices push newer HDMI features, refresh rates, or bandwidth levels that older ports may limit.

Importance: LOW

1.4
ASUS S1 supports HDMI 1.4, older than 54.6% of projectors and equal to 34.1% of projectors.
Max HDMI bandwidth
What it is: Maximum bandwidth supported by HDMI inputs, measured in Gbps.
When it matters: When newer consoles, gaming PCs, or media boxes need more HDMI throughput than older projectors can handle.

Importance: LOW

10.2 Gbps
ASUS S1 supports HDMI bandwidth up to 10.2 Gbps, lower than 52.1% of projectors and equal to 45.4% of projectors.
Show more
N. of HDMI ports
What it is: Number of available HDMI input ports.
When it matters: When you need a console, streamer, set-top box, and another source connected at the same time without swapping cables.

Importance: LOW

1
ASUS S1 has 1 HDMI port/s, fewer than 54.6% of projectors and equal to 42.2% of projectors.
Wi-Fi connectivity
What it is: Support for Wi-Fi network connectivity.
When it matters: When the projector should handle network features, updates, or streaming functions without needing wired Ethernet only.

Importance: LOW

no
ASUS S1 does not support Wi-Fi. 52.7% of projectors support Wi-Fi.
Wi-Fi version
What it is: Supported Wi-Fi standard version.
When it matters: When wireless stability and throughput matter for streaming, updates, or projector ecosystem features.

Importance: LOW

N/A
Bluetooth connectivity
What it is: Support for Bluetooth wireless connectivity.
When it matters: When you plan to pair wireless speakers, headphones, remotes, or other accessories directly with the projector.

Importance: LOW

no
ASUS S1 does not support Bluetooth. 50% of projectors support Bluetooth.
Bluetooth version
What it is: Supported Bluetooth version.
When it matters: When wireless accessory compatibility and connection quality matter beyond Bluetooth being a simple checkbox.

Importance: LOW

N/A
Show more
Smart TV features
What it is: Includes built-in Smart TV functions or operating system.
When it matters: When you prefer built-in apps and streaming convenience instead of adding an external media stick or box.

Importance: LOW

no
ASUS S1 does not have smart TV features. 43.8% of projectors have smart TV features.
Operating system
What it is: The built-in software platform that runs the projector interface, streaming apps, and smart features.
When it matters: When you care about which apps are available, how modern the smart interface feels, and whether the projector includes a built-in streaming platform.

Importance: LOW

none
Android OS

Importance: MEDIUM

no
Dedicated smartphone app
What it is: Availability of a dedicated smartphone control app.
When it matters: When you want setup, input switching, or basic control handled from your phone without always reaching for a remote.

Importance: LOW

no
ASUS S1 does not come with a dedicated smartphone app. 35.6% of projectors come with a dedicated smartphone app.
Remote control
What it is: Comes with a dedicated remote control for operation.
When it matters: When you want easier everyday control without extra gear, built-in convenience features matter.

Importance: LOW

no
ASUS S1 does not include a remote control. 98.5% of projectors include a remote control.
Show more
Light source type
What it is: Type of light source used by the projector.
When it matters: When maintenance expectations, startup behavior, brightness stability, and long-term running costs all matter in the buying decision.

Importance: LOW

led
ASUS S1 uses led light source technology, more advanced than 33.1% of projectors and equal to 39% of projectors.
Laser Light Source
What it is: Whether the projector uses a laser light source instead of a traditional lamp.
When it matters: When lower maintenance, faster startup, and a lamp-free light engine matter over the long term.

Importance: LOW

no
ASUS S1 does not use a laser light source. 28.1% of projectors use a laser light source.
Lamp life
What it is: Expected operational lifespan of the lamp in standard mode, measured in hours.
When it matters: When you care about running costs and maintenance intervals, light-source lifespan matters.

Importance: LOW

30,000 hours
ASUS S1 offers lamp life of 30000 hours, shorter than 68.9% of projectors and equal to 25.4% of projectors.
Lamp life (eco mode)
What it is: Expected operational lifespan of the lamp in eco mode, measured in hours.
When it matters: When you care about running costs and maintenance intervals, light-source lifespan matters.

Importance: LOW

30,000 hours
ASUS S1 offers eco-mode lamp life of 30000 hours, shorter than 59.6% of projectors and equal to 35.6% of projectors.
Same across modes.
Operating power consumption
What it is: Average power consumption during normal operation.
When it matters: When electricity use and heat output matter because the projector runs for long sessions or frequent daily use.

Importance: LOW

32 W
ASUS S1 uses 32 W of power, less than 96.5% of projectors.
Maximum power-on rating.
Show more

ASUS S1 vs the average projector

  • Wider color gamut
    ASUS S1 has a higher color gamut coverage than the average projector (100% NTSC % vs 99% Rec.709 %). The average projector has 99% Rec.709 % of color gamut coverage.
    What it is: Percentage of the target color gamut covered by the projector.
    When it matters: When you care about accurate tones and refined image quality, color precision matters.

    Importance: HIGH

    ASUS S1 has a higher color gamut coverage than the average projector (100% NTSC % vs 99% Rec.709 %). The average projector has 99% Rec.709 % of color gamut coverage.100% NTSC % vs 99% Rec.709 %
  • 0.33 m shorter throw distance
    ASUS S1 has a lower throw distance than the average projector (0.7 m vs 1.06 m). The average projector has 1.06 m of throw distance.
    What it is: Minimum distance required between projector and screen.
    When it matters: When room depth is limited and you still need a large image from a short placement distance.

    Importance: MEDIUM

    ASUS S1 has a lower throw distance than the average projector (0.7 m vs 1.06 m). The average projector has 1.06 m of throw distance.0.73 m vs 1.06 m
  • 10,000 hours longer lamp life
    ASUS S1 has a higher lamp life than the average projector (30,000 hours vs 20,000 hours). The average projector has 20,000 hours of lamp life.
    What it is: Expected operational lifespan of the lamp in standard mode, measured in hours.
    When it matters: When you care about running costs and maintenance intervals, light-source lifespan matters.

    Importance: LOW

    ASUS S1 has a higher lamp life than the average projector (30,000 hours vs 20,000 hours). The average projector has 20,000 hours of lamp life.30000 hours vs 20000 hours
  • 201.9 W lower power use
    ASUS S1 uses less power than the average projector (32 W vs 233.9 W). The average projector uses 233.9 W of power.
    Maximum power-on rating.
    What it is: Average power consumption during normal operation.
    When it matters: When electricity use and heat output matter because the projector runs for long sessions or frequent daily use.

    Importance: LOW

    ASUS S1 uses less power than the average projector (32 W vs 233.9 W). The average projector uses 233.9 W of power.32 W vs 233.9 W
  • 10.4 ms lower input lag
    ASUS S1 has a lower input lag than the average projector (16.6 ms vs 27 ms). The average projector has 27 ms of input lag.
    What it is: Time delay between input signal and displayed image, measured in milliseconds.
    When it matters: When gaming responsiveness matters and you want controls to feel more immediate on fast titles.

    Importance: MEDIUM

    ASUS S1 has a lower input lag than the average projector (16.6 ms vs 27 ms). The average projector has 27 ms of input lag.16.6 ms vs 27 ms
  • 89% lighter weight
    ASUS S1 is lighter than the average projector (0.3 kg vs 3.1 kg). The average projector weighs 3.1 kg.
    What it is: Total weight of the projector including lamp and lens.
    When it matters: When you move the projector between rooms or setups, lower weight matters.

    Importance: LOW

    ASUS S1 is lighter than the average projector (0.3 kg vs 3.1 kg). The average projector weighs 3.1 kg.0.342 kg vs 3.1 kg
  • 10,000 hours longer eco lamp life
    ASUS S1 has a higher lamp life in eco mode than the average projector (30,000 hours vs 20,000 hours). The average projector has 20,000 hours of lamp life in eco mode.
    Same across modes.
    What it is: Expected operational lifespan of the lamp in eco mode, measured in hours.
    When it matters: When you care about running costs and maintenance intervals, light-source lifespan matters.

    Importance: LOW

    ASUS S1 has a higher lamp life in eco mode than the average projector (30,000 hours vs 20,000 hours). The average projector has 20,000 hours of lamp life in eco mode.30000 hours vs 20000 hours
  • 189 mm narrower width
    ASUS S1 is narrower than the average projector (110.5 mm vs 299.5 mm). The average projector has a width of 299.5 mm.
    What it is: Overall width of the projector body.
    When it matters: When shelf width, cabinet space, or a mounting location limits how wide the projector body can be.

    Importance: LOW

    ASUS S1 is narrower than the average projector (110.5 mm vs 299.5 mm). The average projector has a width of 299.5 mm.110.5 mm vs 299.5 mm
  • Wider color gamut
    ASUS S1 has a higher color gamut coverage than the average projector (100% NTSC % vs 99% Rec.709 %). The average projector has 99% Rec.709 % of color gamut coverage.
  • 0.33 m shorter throw distance
    ASUS S1 has a lower throw distance than the average projector (0.7 m vs 1.06 m). The average projector has 1.06 m of throw distance.
  • 10.4 ms lower input lag
    ASUS S1 has a lower input lag than the average projector (16.6 ms vs 27 ms). The average projector has 27 ms of input lag.
  • 10,000 hours longer lamp life
    ASUS S1 has a higher lamp life than the average projector (30,000 hours vs 20,000 hours). The average projector has 20,000 hours of lamp life.
  • 201.9 W lower power use
    ASUS S1 uses less power than the average projector (32 W vs 233.9 W). The average projector uses 233.9 W of power.
  • 89% lighter weight
    ASUS S1 is lighter than the average projector (0.3 kg vs 3.1 kg). The average projector weighs 3.1 kg.
  • 10,000 hours longer eco lamp life
    ASUS S1 has a higher lamp life in eco mode than the average projector (30,000 hours vs 20,000 hours). The average projector has 20,000 hours of lamp life in eco mode.
  • 189 mm narrower width
    ASUS S1 is narrower than the average projector (110.5 mm vs 299.5 mm). The average projector has a width of 299.5 mm.
  • 96.3 mm lower height
    ASUS S1 is shorter than the average projector (30.7 mm vs 127 mm). The average projector has a height of 127 mm.
  • 114.3 mm thinner body
    ASUS S1 is thinner than the average projector (30.7 mm vs 145 mm). The average projector has a thickness of 145 mm.

Total
Overall
Image Quality
Projection & Lens
HDMI & Gaming
Design & Power
  • 90.9% dimmer image
    ASUS S1 has lower ANSI lumens than the average projector (200 vs 2,200). The average projector has 2,200 ANSI lumens.
  • No HDR10 support
    ASUS S1 does not support HDR10, while the average projector does. 56.3% of projectors support HDR10.
  • Low native resolution
    ASUS S1 has a lower native panel resolution than the average projector (854x480 vs 1920x1080). The average projector has a native panel resolution of 1920x1080.
  • Lower output resolution
    ASUS S1 supports a lower output resolution than the average projector (854x480 vs 1920x1080). The average projector outputs at 1920x1080 resolution.
  • Lower contrast ratio
    ASUS S1 has a lower contrast ratio than the average projector (1000:1 vs 10000:1). The average projector has 10000:1 of contrast ratio.
    Dynamic contrast ratio.
  • 2 bit lower color depth
    ASUS S1 has a lower color depth than the average projector (8 bit vs 10 bit). The average projector has 10 bit of color depth.
  • 29.4% lower refresh rate
    ASUS S1 has a lower refresh rate than the average projector (60 Hz vs 85 Hz). The average projector has 85 Hz of refresh rate.
  • No 3D support
    ASUS S1 does not support 3D playback, while the average projector does. 55.1% of projectors support 3D playback.
    No supported 3D playback format is stated.
  • 0.17 inch smaller DMD chip
    ASUS S1 has a lower DMD chip size than the average projector (0.3 inch vs 0.47 inch). The average projector has 0.47 inch of DMD chip size.
  • No 3D glasses support
    ASUS S1 does not support 3D glasses, while the average projector does. 55.9% of projectors support 3D glasses.
  • 150 inch smaller image size
    ASUS S1 has a lower projection size than the average projector (100 inch vs 250 inch). The average projector has 250 inch of projection size.
  • Limited HDMI format
    ASUS S1 supports a less capable max HDMI input format than the average projector (1080p/60Hz vs 4K/120Hz). The average projector supports a max HDMI input format of 4K/120Hz.
  • 43.3% lower HDMI bandwidth
    ASUS S1 has a lower HDMI bandwidth than the average projector (10.2 Gbps vs 18 Gbps). The average projector has 18 Gbps of HDMI bandwidth.
  • Older HDMI version
    ASUS S1 has Old HDMI standard than the average projector (1.4 vs 2.0). The average projector supports HDMI 2.0.
  • Old HDCP version
    ASUS S1 has Old HDCP version than the average projector (1.4 vs 2.2). The average projector supports HDCP 2.2.
  • 1 fewer HDMI ports
    ASUS S1 has fewer HDMI ports than the average projector (1 vs 2). The average projector has 2 HDMI ports.
  • No Wi-Fi support
    ASUS S1 does not support Wi-Fi, while the average projector does. 52.6% of projectors support Wi-Fi.
  • No RS-232 control
    ASUS S1 does not support RS-232 control, while the average projector does. 52.1% of projectors support RS-232 control.
  • 80% weaker audio output
    ASUS S1 has a lower audio output power than the average projector (2 W vs 10 W). The average projector has 10 W of audio output power.
  • No sleep timer
    ASUS S1 does not have a sleep timer, while the average projector does. 80.8% of projectors have a sleep timer.
  • No remote control
    ASUS S1 does not include a remote control, while the average projector does. 98.4% of projectors include a remote control.
  • Basic light source
    ASUS S1 has Basic light source than the average projector (led vs laser). The average projector uses a laser light source.
  • 2 dB louder operation
    ASUS S1 has a higher audible noise than the average projector (32 dB vs 30 dB). The average projector has 30 dB of audible noise.
  • 7 older model
    ASUS S1 was released earlier than the average projector (2,014 vs 2,021). The average projector was released in 2,021.
    January 2014
  • 90.9% dimmer image
    ASUS S1 has lower ANSI lumens than the average projector (200 vs 2,200). The average projector has 2,200 ANSI lumens.
    What it is: Brightness output measured in ANSI lumens.
    When it matters: When you watch with ambient light or on a large screen, higher brightness matters.

    Importance: HIGH

    ASUS S1 has lower ANSI lumens than the average projector (200 vs 2,200). The average projector has 2,200 ANSI lumens.200 vs 2,200
  • No HDR10 support
    ASUS S1 does not support HDR10, while the average projector does. 56.3% of projectors support HDR10.
    What it is: Support for HDR10 high dynamic range standard.
    When it matters: When you want the projector to handle mainstream HDR movie and streaming content instead of standard dynamic range only.

    Importance: MEDIUM

    ASUS S1 does not support HDR10, while the average projector does. 56.3% of projectors support HDR10.
  • Limited HDMI format
    ASUS S1 supports a less capable max HDMI input format than the average projector (1080p/60Hz vs 4K/120Hz). The average projector supports a max HDMI input format of 4K/120Hz.
    What it is: Highest HDMI input format supported by the projector.
    When it matters: When you want to confirm the exact signal format the projector can accept from high-end modern sources.

    Importance: MEDIUM

    ASUS S1 supports a less capable max HDMI input format than the average projector (1080p/60Hz vs 4K/120Hz). The average projector supports a max HDMI input format of 4K/120Hz.1080p/60Hz vs 4K/120Hz
  • Lower output resolution
    ASUS S1 supports a lower output resolution than the average projector (854x480 vs 1920x1080). The average projector outputs at 1920x1080 resolution.
    What it is: The resolution the projector can actually display through its imaging system.
    When it matters: When you want to know the actual image detail the projector can put on screen rather than just the source format it accepts.

    Importance: HIGH

    ASUS S1 supports a lower output resolution than the average projector (854x480 vs 1920x1080). The average projector outputs at 1920x1080 resolution.854x480 vs 1920x1080
  • Low native resolution
    ASUS S1 has a lower native panel resolution than the average projector (854x480 vs 1920x1080). The average projector has a native panel resolution of 1920x1080.
    What it is: Native resolution of the display panel or imaging device.
    When it matters: When picture sharpness matters enough that you want to know the projector's true native imaging resolution, not just supported input formats.

    Importance: HIGH

    ASUS S1 has a lower native panel resolution than the average projector (854x480 vs 1920x1080). The average projector has a native panel resolution of 1920x1080.854x480 vs 1920x1080
  • Lower contrast ratio
    ASUS S1 has a lower contrast ratio than the average projector (1000:1 vs 10000:1). The average projector has 10000:1 of contrast ratio.
    Dynamic contrast ratio.
    What it is: Ratio of brightest white to darkest black displayed by the projector.
    When it matters: When you watch movies in a dark room, stronger contrast matters.

    Importance: HIGH

    ASUS S1 has a lower contrast ratio than the average projector (1000:1 vs 10000:1). The average projector has 10000:1 of contrast ratio.1,000:1 vs 10,000:1
  • 2 bit lower color depth
    ASUS S1 has a lower color depth than the average projector (8 bit vs 10 bit). The average projector has 10 bit of color depth.
    What it is: Number of bits per color channel for color depth.
    When it matters: When you care about accurate tones and refined image quality, color precision matters.

    Importance: LOW

    ASUS S1 has a lower color depth than the average projector (8 bit vs 10 bit). The average projector has 10 bit of color depth.8 bit vs 10 bit
  • 150 inch smaller image size
    ASUS S1 has a lower projection size than the average projector (100 inch vs 250 inch). The average projector has 250 inch of projection size.
    What it is: Maximum supported image size for projection, measured diagonally.
    When it matters: When you want a cinema-size picture, maximum projection size matters.

    Importance: MEDIUM

    ASUS S1 has a lower projection size than the average projector (100 inch vs 250 inch). The average projector has 250 inch of projection size.100 inch vs 250 inch
Total
Overall
Image Quality
Projection & Lens
HDMI & Gaming
Connectivity
Audio & Features
Design & Power

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United Kingdom
amazon
4.2
325 Reviews
amazon
4.3
43 Reviews

(Reviews last updated: June 2026)

What customers like about ASUS S1?

  • Extremely portable, palm-sized design with a premium aluminum finish
  • Impressive 3-hour battery life, sufficient for most full-length movies
  • Doubles as a 6,000mAh power bank to charge mobile devices
  • Surprisingly low input lag (approx. 16.6ms), making it viable for casual gaming
  • Short throw distance, capable of projecting a 41-inch image from just one meter away
  • Long-lasting LED light source rated for up to 30,000 hours

What customers dislike about ASUS S1?

  • Low native resolution (854x480), which makes small text difficult to read
  • Limited brightness (200 lumens) requires a near-completely dark room for best results
  • Sparse connectivity options, limited primarily to a single HDMI/MHL port
  • Built-in 2W speaker is relatively soft and lacks depth, making external audio recommended
  • Struggles with shadow detail and color accuracy in very dark movie or game scenes
  • Lacks a zoom lens, requiring physical movement of the device to adjust image size

Expert reviews

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pcmag.com
25/04/2014
Asus S1 Mobile LED Projector Review

The Asus S1 is a compact, 0.8-pound aluminum palmtop projector priced at $319, featuring a 22Wh battery that allows for up to 3 hours of cable-free projection while acting as a power bank. Key pros include its high portability, short-throw ratio capable of a 55-inch image from 5.5 feet, and Mobile High-Definition Link (MHL) support for device mirroring. However, the device is...Read more

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projectorcentral.com
15/05/2014
ASUS S1 Pocket Projector Review

ASUS S1 Pocket Projector Review Summary The ASUS S1 Pocket Projector is an ultra-portable, palm-sized DLP device equipped with an LED light source, designed for both casual home entertainment and mobile business presentations. Boasting a high-quality silver metal finish, it weighs just 13 ounces and features a built-in rechargeable battery that lasts up to 3 hours, offering true...Read more

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ign.com
02/09/2019
Asus S1 Portable Projector Review

However, its overall usability is restricted by notable performance and display limitations. The projector has a low native resolution of 854 x 480 pixels and a maximum light output of only 200 lumens, which means it strictly requires a pitch-black room or a dark night outdoors to be usable. Additionally, testing revealed poor shadow detail that compromises dark cinematic scenes,...Read more

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lbtechreviews.com
12/09/2020
Asus S1 – Tech Reviews

The Asus S1 is a highly compact travel projector designed to deliver optimized picture quality and high brightness for its price point and portable form factor. Slightly larger than the smallest mini-projectors, it remains highly portable, fitting into a handbag or trouser pocket. It features a short throw distance that can project a large 41-inch image from just one meter away....Read more

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techsmart.co.za
07/04/2014
Review: Asus S1 Mobile LED Projector

The TechSmart review of the Asus S1 Mobile LED Projector praises the device for successfully blending an attractive, premium design with strong portable performance. Taking design inspiration from the Zenbook touch, the projector features a striking brushed aluminium finish and highly compact dimensions—measuring just 110.5 mm x 102 mm x 30.7 mm and weighing a light 342 grams. It...Read more

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techenclave.com
30/06/2015
Asus s1 LED projector review

The Asus S1 LED Projector is an ultra-portable, palm-sized entry-level device praised for its highly durable, premium metallic brushed finish and exceptional portability. Ideal for users on the move, it features a 6,000mAh built-in battery that reliably powers through a 2.5-hour movie and doubles as a power bank and emergency flashlight. It includes a 2W built-in speaker that...Read more

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uk.pcmag.com
13/06/2018
Asus S1 Mobile LED Projector Review

The PCMag Review highlights the Asus S1 Mobile LED Projector as a stylish, highly portable palmtop projector encased in a sleek metallic chassis. Key advantages of the device include a modest price tag, a short-throw ratio capable of projecting large images in tight spaces, and a long-lasting LED light source. Its standout features are a built-in rechargeable battery that provides...Read more

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forbes.com
07/05/2014
Asus S1 Review: Pretty Pico Pocket Projector

Geoffrey Morrison's review for Forbes praises the ASUS S1 for its impressive 200-lumen brightness, robust battery life, and high-quality aluminum design. Its compact form factor is accompanied by a good short-throw ratio, making it an attractive option for mobile presentations or casual viewing. However, the projector is limited by a low 854x480 resolution, a lack of zoom...Read more

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uk.pcmag.com
14/05/2014
Asus S1 Mobile LED Projector - PCMag UK The Asus S1, released around 2014, was recognized as a compact, battery-powered pico projector designed for hi...

The Asus S1 Mobile LED Projector is a highly portable, palmtop-sized aluminum device weighing just 0.8 pounds (1.1 pounds with the power adapter) that features an appealing, square design with rounded corners and an etched concentric-circle top surface. Its standout features include a built-in rechargeable battery providing up to 3 hours of projection time and a unique "power bank"...Read more

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01net.com
12/02/2014
Asus S1 review: this mini projector is as beautiful as it is disappointing

The Asus S1 is a compact and highly portable mini projector designed for on-the-go travel, featuring an elegant brushed aluminum-style plastic casing with dust-resistant square ventilation holes. Key strengths highlighted in the review include its quiet operation at 37 dB during extended use, a built-in protective sliding lens cover, and MHL compatibility for easy video streaming...Read more

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01net.com
11/08/2015
Asus S1 Review: This Mini Projector Is as Beautiful as It Is Disappointing

Based on the technical review by 01net.com, the Asus S1 is a pocket-sized DLP picoprojector priced at around €329.00 that earns high praise exclusively for its physical build. The review highlights its ultra-portable, lightweight (0.35 kg) form factor and an exemplary brushed aluminum finish, making it a highly travel-friendly device. Functionality pros include a built-in...Read more

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geeknetic.es
16/04/2014
ASUS S1 Mobile LED Projector [Full Review]

of the ASUS S1 Mobile LED Projector However, the projector has clear performance limitations due to its compact form factor. The most notable cons are its low native resolution of 854x480 pixels (WVGA) and a maximum brightness of 200 lumens, which makes it poorly suited for home cinema setups or reading dense text files like large Excel sheets. The device also lacks physical lens...Read more

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madboxpc.com
28/09/2014
Portable LED Projector Review: Asus S1 - madboxpc

The ASUS S1 is a compact, 0.8-pound DLP projector with an aluminum chassis, featuring a built-in 6,000 mAh battery that provides up to 3 hours of playtime and acts as a power bank. It offers a short-throw ratio, producing a 41-inch image from 1 meter, and boasts a 30,000-hour LED lifespan. YouTube · However, the device is limited by a low 854x480 resolution and 200-lumen brightness,...Read more

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tuttodigitale.it
01/02/2015
ASUS S1 Portable Projector - Tutto Digitale

The ASUS S1 is a highly portable "pico" projector that delivers strong convenience and immediate plug-and-play functionality within a lightweight, 342-gram aluminum chassis. Its standout pros include an internal 6000 mAh battery that offers up to 3 hours of standalone projection or doubles as a power bank to charge mobile devices. Additionally, it features a short-throw lens capable...Read more

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