Withings Steel Hr 40mm Review | 126 Data compared

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  • Avg. price in UK: ~£180
  • Avg. price in US: ~$200
  • Screen size: 1.4 inch
  • Battery life: 25 day/s
  • Display type: OLED

Withings Steel Hr 40mm review. Compare 126 technical specifications and user reviews to see how it ranks among smartwatches and if it is worth buying.

5.1

Overall score

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

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

Score components:

90.0%

4.6

Technical Score

10.0%

8.9

User score

Good
4.6

Technical Score

What it is: An assessment of the smartwatch's technical performance, covering eight key areas: performance & hardware, software, camera, connectivity, display, battery, audio, and design.

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

Score components:

24.0%

3.1

Health

21.0%

7.1

Fitness

16.0%

5.3

Battery

14.0%

4.3

Smart features

12.0%

2.4

Connectivity

9.0%

6.2

Display & Design

4.0%

2.4

Hardware

Poor
8.9

User score

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

When it matters: When you want to know how a smartwatch handles daily tasks and how reliable it remains over time according to user feedback.

Score components:

70.0%

8.5

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.3
(5713)
amazon
3.2
(379)
amazon
3.8
(69)

(Reviews last updated: April 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 Withings Steel HR 40mm is a hybrid smartwatch featuring a 39.5mm stainless steel case, a 20mm swappable strap, and a 5 ATM water resistance rating suitable for swimming. It combines traditional analog hands with a small OLED display for heart rate data, steps, and basic smartphone notifications, while a dedicated sub-dial tracks progress toward daily activity goals. Key pros include an exceptional battery life of up to 25 days, plus an additional 20 days in power reserve mode, along with automatic tracking for over 30 activities and detailed sleep cycle analysis. However, notable cons include a lack of built-in GPS (requiring a connected phone), a single-button interface that limits navigation, and basic notifications that do not store history or support many third-party apps.

    Technical Specifications of smartwatch Withings Steel Hr 40mm

    Technical Score

    What it is: An assessment of the smartwatch's technical performance, covering eight key areas: performance & hardware, software, camera, connectivity, display, battery, audio, and design.

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

    Score components:

    24.0%

    3.1

    Health

    21.0%

    7.1

    Fitness

    16.0%

    5.3

    Battery

    14.0%

    4.3

    Smart features

    12.0%

    2.4

    Connectivity

    9.0%

    6.2

    Display & Design

    4.0%

    2.4

    Hardware

    4.6
    Withings Steel Hr 40mm has a technical score of 4.63 points, which is lower than 93.3% of smartwatches.
    User score

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

    When it matters: When you want to know how a smartwatch handles daily tasks and how reliable it remains over time according to user feedback.

    Score components:

    70.0%

    8.5

    User reviews

    30.0%

    10

    Popularity

    User score:
    United Kingdom
    amazon
    4.3
    (5713)
    amazon
    3.2
    (379)
    amazon
    3.8
    (69)

    (Reviews last updated: April 2026)

    8.9
    Withings Steel Hr 40mm has a user score of 8.92 points, which is higher than 75.7% of smartwatches.
    Popularity
    What it is: An indicator based on the number of reviews received by the smartwatch.
    When it matters: When you prefer to purchase a product chosen and reviewed by many other consumers.
    10
    Withings Steel Hr 40mm has a popularity of 10 points, which is higher than 52.6% of products in this category.
    Ratio quality/price

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

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

    Score components:

    60.0%

    5.1

    Overall score

    40.0%

    9.6

    Price

    6.4
    Withings Steel Hr 40mm has a quality-to-price ratio of 6.4 points, which is lower than 88.8% of products in this category.
    Brand name
    What it is: The company that designs, sells, and supports the watch.
    When it matters: When brand ecosystem, style, or support matters to you.

    Importance: MEDIUM

    Withings
    Heart rate monitor
    What it is: A built-in sensor that measures your pulse directly from the wrist.
    When it matters: When you want health data from your wrist during the day or night.

    Importance: HIGH

    yes
    Withings Steel Hr 40mm includes a heart rate monitor. 90.4% of smartwatches include a heart rate monitor.
    Blood oxygen monitoring
    What it is: A wrist-based feature that estimates blood oxygen saturation over time.
    When it matters: When you want health data from your wrist during the day or night.

    Importance: HIGH

    no
    Withings Steel Hr 40mm does not support blood oxygen monitoring. 64.4% of smartwatches support blood oxygen monitoring.
    Readings are for wellness use, not medical diagnosis.
    ECG
    What it is: The ability to record a single-lead electrocardiogram from the wrist.
    When it matters: When you want health data from your wrist during the day or night.

    Importance: HIGH

    no
    Withings Steel Hr 40mm does not support ECG. 15.1% of smartwatches support ECG.
    Irregular heart rate warnings
    What it is: Notifications that flag heart-rate patterns which appear unusually irregular.
    When it matters: When you want health data from your wrist during the day or night.

    Importance: MEDIUM

    no
    Withings Steel Hr 40mm does not support irregular heart rate warnings. 43.7% of smartwatches support irregular heart rate warnings.
    Show more
    Accelerometer
    What it is: A motion sensor that measures acceleration, steps, gestures, and general movement.
    When it matters: When you track workouts and want better training data.

    Importance: MEDIUM

    yes
    Withings Steel Hr 40mm includes an accelerometer. 99.1% of smartwatches include an accelerometer.
    Barometer
    What it is: A pressure sensor used for altitude changes, elevation estimates, and weather-related context.
    When it matters: When you run, ride, hike, or navigate without relying on your phone.

    Importance: MEDIUM

    no
    Withings Steel Hr 40mm does not include a barometer. 45.6% of smartwatches include a barometer.
    Gyroscope
    What it is: A motion sensor that measures rotation and helps interpret wrist movement more accurately.
    When it matters: When you track workouts and want better training data.

    Importance: MEDIUM

    no
    Withings Steel Hr 40mm does not include a gyroscope. 64.6% of smartwatches include a gyroscope.
    Cadence sensor
    What it is: A sensor input used to measure step or pedal rhythm during training.
    When it matters: When you track workouts and want better training data.

    Importance: MEDIUM

    no
    Withings Steel Hr 40mm does not include a cadence sensor. 20.1% of smartwatches include a cadence sensor.
    Distance tracking
    What it is: The ability to measure how far you move during walks, runs, rides, or other activities.
    When it matters: When you track workouts and want better training data.

    Importance: MEDIUM

    yes
    Withings Steel Hr 40mm supports distance tracking. 95.7% of smartwatches support distance tracking.
    Show more
    Battery life
    What it is: The typical endurance the watch can deliver on a full charge under the stated usage pattern.
    When it matters: When you do not want to charge the watch too often.

    Importance: HIGH

    Good value: >=7 days

    25 day/s
    Withings Steel Hr 40mm offers a battery life of 25 day/s which is longer than that of 94.7% of smartwatches and equal to that of 0.9% of smartwatches.
    Battery life in training mode
    What it is: The expected endurance while workout tracking and related training functions are active.
    When it matters: When you do not want to charge the watch too often.

    Importance: HIGH

    Good value: >=36.8 h

    5 h
    Withings Steel Hr 40mm lasts 5 h in training mode which is shorter than 90.7% of smartwatches and equal to that of 3.6% of smartwatches.
    Battery life with GPS on
    What it is: The expected runtime when satellite tracking stays active throughout use.
    When it matters: When you do not want to charge the watch too often.

    Importance: HIGH

    Good value: >=35 h

    N/A
    Battery power
    What it is: The battery capacity, usually measured in milliampere-hours (mAh).
    When it matters: When you do not want to charge the watch too often.

    Importance: HIGH

    Good value: >=397 mAh

    110 mAh
    Withings Steel Hr 40mm has a battery capacity of 110 mAh which is smaller than the batteries in 98.1% of smartwatches and equal to those in 0.3% of smartwatches.
    Battery capacity varies by case size/model variant.
    Charge time
    What it is: The time needed to recharge the battery from empty to full or to a stated percentage.
    When it matters: When you want to top up the battery quickly.

    Importance: HIGH

    Good value: <=102 min

    120 min
    Withings Steel Hr 40mm charges in 120 min which is faster than 12.9% of smartwatches and equal to the charge time of 43.4% of smartwatches.
    Normalized from hour-based sources to 120 minutes.
    Show more
    Operating system
    What it is: The software platform that runs the watch interface, apps, and core functions.
    When it matters: When you care about apps, features, and long-term support.

    Importance: HIGH

    Proprietary OS
    Withings Steel Hr 40mm runs Proprietary OS which is less advanced than the operating system in 53.6% of smartwatches and the same as that in 42.7% of smartwatches.
    Software update frequency
    What it is: Shows how actively the watch is still updated: regular means ongoing updates throughout active support, occasional means updates every few months or only from time to time, and ended means active software support has mostly stopped.
    When it matters: When you care how actively the watch is still supported with fixes, patches, and new features.

    Importance: MEDIUM

    ?
    Third-party app support
    What it is: Support for installing or using apps from developers beyond the watch maker.
    When it matters: When you care about apps, features, and long-term support.

    Importance: MEDIUM

    no
    Withings Steel Hr 40mm does not support third-party apps. 47.6% of smartwatches support third-party apps.
    Notifications
    What it is: Mirroring of calls, messages, apps, or other alerts on the watch.
    When it matters: When you want to check alerts without taking out your phone.

    Importance: MEDIUM

    yes
    Withings Steel Hr 40mm supports notifications. 99.9% of smartwatches support notifications.
    Voice assistant support
    What it is: Support for a voice assistant that can answer queries or trigger actions from the wrist.
    When it matters: When you want to control the watch or reply without typing.

    Importance: MEDIUM

    no
    Withings Steel Hr 40mm does not support voice assistants. 68% of smartwatches support voice assistants.
    Show more
    Cellular module
    What it is: Built-in mobile connectivity that can keep the watch online away from the phone.
    When it matters: When you want calls, messages, or data without your phone nearby.

    Importance: HIGH

    no
    Withings Steel Hr 40mm does not include a cellular module. 17.2% of smartwatches include a cellular module.
    SIM cards
    What it is: The number or type of SIM options the watch accepts for cellular service.
    When it matters: When you want calls, messages, or data without your phone nearby.

    Importance: LOW

    Good value: eSIM support

    ?
    GPS
    What it is: Built-in satellite positioning that lets the watch record location during outdoor activity.
    When it matters: When you run, ride, hike, or navigate without relying on your phone.

    Importance: HIGH

    no
    Withings Steel Hr 40mm does not support GPS. 56.1% of smartwatches support GPS.
    GPS works only via connected smartphone (no built-in GPS chip).
    Galileo support
    What it is: Support for Galileo satellites alongside other positioning systems.
    When it matters: When you run, ride, hike, or navigate without relying on your phone.

    Importance: MEDIUM

    no
    Withings Steel Hr 40mm does not support Galileo navigation. 38.7% of smartwatches support Galileo navigation.
    No built-in GPS; uses connected phone GPS.
    Compass
    What it is: A directional sensor that helps the watch determine heading and orientation.
    When it matters: When you run, ride, hike, or navigate without relying on your phone.

    Importance: MEDIUM

    no
    Withings Steel Hr 40mm does not include a compass. 49.3% of smartwatches include a compass.
    Show more
    Screen size
    What it is: The diagonal measurement of the visible display area, usually expressed in inches.
    When it matters: When you want the screen to be easy to read at a glance.

    Importance: HIGH

    Good value: >=1.5 inch

    1.4 inch
    Withings Steel Hr 40mm has a screen size of 1.4 inch which is larger than the screens of 49.2% of smartwatches and equal to those of 6.8% of smartwatches.
    Display type
    What it is: The screen technology used by the watch, such as AMOLED, OLED, or memory-in-pixel LCD.
    When it matters: When you want the screen to be easy to read at a glance.

    Importance: HIGH

    OLED
    Withings Steel Hr 40mm uses a OLED display type which is less advanced than that of 51.4% of smartwatches and the same as that of 9.7% of smartwatches.
    Resolution
    What it is: The total number of pixels available on the watch display.
    When it matters: When you want the screen to be easy to read at a glance.

    Importance: MEDIUM

    Good value: >=416 x 416

    36 x 72
    Withings Steel Hr 40mm has a display resolution of 36x72 which is lower than that of 98.2% of smartwatches and equal to that of 0.3% of smartwatches.
    Pixel density
    What it is: The number of pixels packed into each inch of the display.
    When it matters: When you want the screen to be easy to read at a glance.

    Importance: MEDIUM

    Good value: >=326 ppi

    57 ppi
    Withings Steel Hr 40mm has a pixel density of 57 ppi which is lower than that of 100% of smartwatches of smartwatches.
    Display brightness
    What it is: The peak brightness the display can reach, usually expressed in nits.
    When it matters: When you want the screen to stay readable outdoors and in strong sunlight.

    Importance: HIGH

    Good value: >=1000 nits

    ?
    Show more
    CPU speed
    What it is: The clock speed of the watch processor, usually expressed in GHz or MHz.
    When it matters: When you want apps and menus to feel smooth.

    Importance: MEDIUM

    Good value: Modern standard

    ?
    Processor model
    What it is: The processor model is the chipset or SoC that powers the watch's performance, connectivity, and efficiency.
    When it matters: When you care about app responsiveness, platform generation, and long-term feature support.

    Importance: LOW

    Good value: modern smartwatch chipset

    ?
    RAM
    What it is: The amount of working memory available for apps, watch faces, and background tasks.
    When it matters: When you want apps and menus to feel smooth.

    Importance: MEDIUM

    Good value: >=1 GB

    0.000977 GB
    Withings Steel Hr 40mm has 0.000977 GB of RAM which is smaller than the RAM in 97.4% of smartwatches and equal to that of 2.6% of smartwatches.
    1 MB RAM
    Internal storage
    What it is: Built-in storage for apps, music, watch faces, and other local data.
    When it matters: When you want more room for apps, music, or offline data.

    Importance: MEDIUM

    Good value: >=8 GB

    0 GB
    Withings Steel Hr 40mm uses 0 GB for internal storage which is smaller than that of 73.5% of smartwatches and equal to that of 26.6% of smartwatches.
    No local user storage for apps/media.
    External memory slot
    What it is: A slot for expandable storage such as a memory card, if the watch provides one.
    When it matters: When you want more room for apps, music, or offline data.

    Importance: LOW

    no
    Withings Steel Hr 40mm does not include an external memory slot. 0.3% of smartwatches include an external memory slot.
    Show more

    Withings Steel Hr 40mm vs the average smartwatch

    • 18 day/s longer battery life
      Withings Steel Hr 40mm offers 25 day/s of battery life, while the average smartwatch offers 7 day/s.
      What it is: The typical endurance the watch can deliver on a full charge under the stated usage pattern.
      When it matters: When you do not want to charge the watch too often.

      Importance: HIGH

      Good value: >=7 days

      Withings Steel Hr 40mm offers 25 day/s of battery life, while the average smartwatch offers 7 day/s.25 day/s vs 7 day/s
    • Includes fall detection
      Withings Steel Hr 40mm supports fall detection, the average smartwatch does not. 22.4% of smartwatches support fall detection.
      What it is: Automatic detection of hard falls that can trigger checks or emergency actions.
      When it matters: When you want extra help in an emergency.

      Importance: HIGH

      Withings Steel Hr 40mm supports fall detection, the average smartwatch does not. 22.4% of smartwatches support fall detection.
    • Has multi-sport mode
      Withings Steel Hr 40mm includes a multi-sport mode, the average smartwatch does not. 49.4% of smartwatches include a multi-sport mode.
      What it is: A training mode designed to handle multiple sports within a single session.
      When it matters: When you track workouts and want better training data.

      Importance: MEDIUM

      Withings Steel Hr 40mm includes a multi-sport mode, the average smartwatch does not. 49.4% of smartwatches include a multi-sport mode.
    • Has weight tracking
      Withings Steel Hr 40mm supports weight tracking, the average smartwatch does not. 39.2% of smartwatches support weight tracking.
      Weight tracking may rely on manual app entry or smart-scale sync.
      What it is: Logging or syncing of body-weight records over time.
      When it matters: When you want health data from your wrist during the day or night.

      Importance: LOW

      Withings Steel Hr 40mm supports weight tracking, the average smartwatch does not. 39.2% of smartwatches support weight tracking.
    • Has hybrid design
      Withings Steel Hr 40mm has a hybrid design, the average smartwatch does not. 9% of smartwatches have a hybrid design.
      What it is: A watch design that mixes smart features with traditional analog or low-power elements.
      When it matters: When you wear the watch all day or sleep with it on.

      Importance: LOW

      Withings Steel Hr 40mm has a hybrid design, the average smartwatch does not. 9% of smartwatches have a hybrid design.
    • Better case material
      Withings Steel Hr 40mm uses stainless steel for the case material, while the average smartwatch uses polycarbonate.
      316L stainless steel case
      What it is: The main material used for the watch case.
      When it matters: When you wear the watch all day or sleep with it on.

      Importance: MEDIUM

      Good value: Aluminium, stainless steel, or titanium

      Withings Steel Hr 40mm uses stainless steel for the case material, while the average smartwatch uses polycarbonate.stainless steel vs polycarbonate
    • Better band material
      Withings Steel Hr 40mm uses silicone, leather for the band material, while the average smartwatch uses silicone.
      Band material may vary by included strap version or package.
      What it is: The main material used for the watch strap or band.
      When it matters: When you wear the watch all day or sleep with it on.

      Importance: MEDIUM

      Withings Steel Hr 40mm uses silicone, leather for the band material, while the average smartwatch uses silicone.silicone, leather vs silicone
    • 2 mm narrower band
      Withings Steel Hr 40mm has a narrower band width than the average smartwatch (20 mm vs 22 mm). The average smartwatch band is 22 mm wide.
      What it is: The strap width used by the watch body, usually expressed in millimeters.
      When it matters: When you wear the watch all day or sleep with it on.

      Importance: MEDIUM

      Good value: 18-22 mm

      Withings Steel Hr 40mm has a narrower band width than the average smartwatch (20 mm vs 22 mm). The average smartwatch band is 22 mm wide.20 mm vs 22 mm
    • Has weight tracking
      Withings Steel Hr 40mm supports weight tracking, the average smartwatch does not. 39.2% of smartwatches support weight tracking.
    • Has multi-sport mode
      Withings Steel Hr 40mm includes a multi-sport mode, the average smartwatch does not. 49.4% of smartwatches include a multi-sport mode.
    • 18 day/s longer battery life
      Withings Steel Hr 40mm offers 25 day/s of battery life, while the average smartwatch offers 7 day/s.
    • Has hybrid design
      Withings Steel Hr 40mm has a hybrid design, the average smartwatch does not. 9% of smartwatches have a hybrid design.
    • Better case material
      Withings Steel Hr 40mm uses stainless steel for the case material, while the average smartwatch uses polycarbonate.
    • Better band material
      Withings Steel Hr 40mm uses silicone, leather for the band material, while the average smartwatch uses silicone.
    • 2 mm narrower band
      Withings Steel Hr 40mm has a narrower band width than the average smartwatch (20 mm vs 22 mm). The average smartwatch band is 22 mm wide.
    • Includes fall detection
      Withings Steel Hr 40mm supports fall detection, the average smartwatch does not. 22.4% of smartwatches support fall detection.
    • No blood oxygen
      Withings Steel Hr 40mm does not support blood oxygen monitoring, the average smartwatch does. 64.4% of smartwatches support blood oxygen monitoring.
      Readings are for wellness use, not medical diagnosis.
    • No stress monitoring
      Withings Steel Hr 40mm does not support stress monitoring, the average smartwatch does. 65.4% of smartwatches support stress monitoring.
    • No cycle tracking
      Withings Steel Hr 40mm does not support menstrual cycle tracking, the average smartwatch does. 64.6% of smartwatches support menstrual cycle tracking.
    • No inactivity alerts
      Withings Steel Hr 40mm does not support inactivity alerts, the average smartwatch does. 85.7% of smartwatches support inactivity alerts.
    • No elevation tracking
      Withings Steel Hr 40mm does not support elevation tracking, the average smartwatch does. 62.7% of smartwatches support elevation tracking.
    • No gyroscope
      Withings Steel Hr 40mm does not include a gyroscope, the average smartwatch does. 64.6% of smartwatches include a gyroscope.
    • No coaching
      Withings Steel Hr 40mm does not support coaching, the average smartwatch does. 51.8% of smartwatches support coaching.
    • No auto pause
      Withings Steel Hr 40mm does not support auto pause, the average smartwatch does. 59.3% of smartwatches support auto pause.
    • No voice feedback
      Withings Steel Hr 40mm does not support voice feedback, the average smartwatch does. 62.1% of smartwatches support voice feedback.
    • 50 fewer exercise profiles
      Withings Steel Hr 40mm supports fewer exercise modes than the average smartwatch (30 vs 80). The average smartwatch supports 80 exercise modes.
    • 190 mAh smaller battery capacity
      Withings Steel Hr 40mm has a smaller battery capacity than the average smartwatch (110 mAh vs 300 mAh). The average smartwatch battery is 300 mAh.
      Battery capacity varies by case size/model variant.
    • 15 h shorter training battery life
      Withings Steel Hr 40mm lasts less in training mode than the average smartwatch (5 h vs 20 h). The average smartwatch lasts 20 h.
    • No GPS
      Withings Steel Hr 40mm does not support GPS, the average smartwatch does. 56.1% of smartwatches support GPS.
      GPS works only via connected smartphone (no built-in GPS chip).
    • Older Bluetooth version
      Withings Steel Hr 40mm supports an older Bluetooth version than the average smartwatch (4 vs 5.0). The average smartwatch uses 5.0.
    • No always-on display
      Withings Steel Hr 40mm does not have an always-on display, the average smartwatch does. 66.4% of smartwatches have an always-on display.
    • 269 ppi lower pixel density
      Withings Steel Hr 40mm has a lower pixel density than the average smartwatch (57 ppi vs 326 ppi). The average smartwatch display reaches 326 ppi.
    • Lower resolution
      Withings Steel Hr 40mm has a display resolution of 36x72, while the average smartwatch reaches 352x430.
    • Basic display type
      Withings Steel Hr 40mm uses OLED display technology, while the average smartwatch features AMOLED.
    • 1.4 mm thicker watch body
      Withings Steel Hr 40mm is thicker than the average smartwatch (13 mm vs 11.6 mm). The average smartwatch thickness is 11.6 mm.
    • No touch screen
      Withings Steel Hr 40mm does not have a touch screen, the average smartwatch does. 91.8% of smartwatches have a touch screen.
    • No music playback
      Withings Steel Hr 40mm does not support music playback, the average smartwatch does. 53.9% of smartwatches support music playback.
    • No call answering
      Withings Steel Hr 40mm does not support call answering, the average smartwatch does. 57% of smartwatches support call answering.
    • No voice commands
      Withings Steel Hr 40mm does not support voice commands, the average smartwatch does. 64.5% of smartwatches support voice commands.
    • No voice assistant
      Withings Steel Hr 40mm does not support voice assistants, the average smartwatch does. 68% of smartwatches support voice assistants.
    • No camera remote control
      Withings Steel Hr 40mm does not include built-in camera remote control, the average smartwatch does. 85.2% of smartwatches that are equipped with a camera include built-in camera remote control.
    • No passcode
      Withings Steel Hr 40mm does not include passcode protection, the average smartwatch does. 68.5% of smartwatches include passcode protection.
    • No call control
      Withings Steel Hr 40mm does not offer call control, the average smartwatch does. 90.1% of smartwatches offer call control.
    • No gesture control
      Withings Steel Hr 40mm does not support gesture control, the average smartwatch does. 78.1% of smartwatches support gesture control.
    • No phone finder
      Withings Steel Hr 40mm does not include phone finder, the average smartwatch does. 94.6% of smartwatches include phone finder.
    • No widgets
      Withings Steel Hr 40mm does not support widgets, the average smartwatch does. 83.1% of smartwatches support widgets.
    • No speaker
      Withings Steel Hr 40mm does not include a built-in speaker, the average smartwatch does. 54.7% of smartwatches include a built-in speaker.
    • 1 GB less RAM
      Withings Steel Hr 40mm has less RAM than the average smartwatch (0 GB vs 1 GB). The average smartwatch includes 1 GB of RAM.
      1 MB RAM
    • 1 fewer microphones
      Withings Steel Hr 40mm has fewer microphones than the average smartwatch (0 vs 1). The average smartwatch includes 1 microphones.
    • 4 GB less storage
      Withings Steel Hr 40mm offers less internal storage than the average smartwatch (0 GB vs 4 GB). The average smartwatch provides 4 GB of storage.
      No local user storage for apps/media.
    • 5 year/s older release date
      Withings Steel Hr 40mm is an older model than the average smartwatch (2016 vs 2021). The average smartwatch was released in 2021.
      October 2016
    • No GPS
      Withings Steel Hr 40mm does not support GPS, the average smartwatch does. 56.1% of smartwatches support GPS.
      GPS works only via connected smartphone (no built-in GPS chip).
      What it is: Built-in satellite positioning that lets the watch record location during outdoor activity.
      When it matters: When you run, ride, hike, or navigate without relying on your phone.

      Importance: HIGH

      Withings Steel Hr 40mm does not support GPS, the average smartwatch does. 56.1% of smartwatches support GPS.
    • No blood oxygen
      Withings Steel Hr 40mm does not support blood oxygen monitoring, the average smartwatch does. 64.4% of smartwatches support blood oxygen monitoring.
      Readings are for wellness use, not medical diagnosis.
      What it is: A wrist-based feature that estimates blood oxygen saturation over time.
      When it matters: When you want health data from your wrist during the day or night.

      Importance: HIGH

      Withings Steel Hr 40mm does not support blood oxygen monitoring, the average smartwatch does. 64.4% of smartwatches support blood oxygen monitoring.
    • No always-on display
      Withings Steel Hr 40mm does not have an always-on display, the average smartwatch does. 66.4% of smartwatches have an always-on display.
      What it is: A display mode that keeps key information visible even when the watch is idle.
      When it matters: When you want the screen to be easy to read at a glance.

      Importance: HIGH

      Withings Steel Hr 40mm does not have an always-on display, the average smartwatch does. 66.4% of smartwatches have an always-on display.
    • No speaker
      Withings Steel Hr 40mm does not include a built-in speaker, the average smartwatch does. 54.7% of smartwatches include a built-in speaker.
      What it is: An onboard speaker for calls, prompts, alarms, or media playback.
      When it matters: When you want audio, calls, or voice features on the watch itself.

      Importance: LOW

      Withings Steel Hr 40mm does not include a built-in speaker, the average smartwatch does. 54.7% of smartwatches include a built-in speaker.No vs yes
    • No stress monitoring
      Withings Steel Hr 40mm does not support stress monitoring, the average smartwatch does. 65.4% of smartwatches support stress monitoring.
      What it is: Stress estimates derived from heart rate, HRV, or similar body signals.
      When it matters: When you want health data from your wrist during the day or night.

      Importance: HIGH

      Withings Steel Hr 40mm does not support stress monitoring, the average smartwatch does. 65.4% of smartwatches support stress monitoring.
    • No elevation tracking
      Withings Steel Hr 40mm does not support elevation tracking, the average smartwatch does. 62.7% of smartwatches support elevation tracking.
      What it is: Tracking of climbed, descended, or current elevation during activities.
      When it matters: When you run, ride, hike, or navigate without relying on your phone.

      Importance: MEDIUM

      Withings Steel Hr 40mm does not support elevation tracking, the average smartwatch does. 62.7% of smartwatches support elevation tracking.
    • No music playback
      Withings Steel Hr 40mm does not support music playback, the average smartwatch does. 53.9% of smartwatches support music playback.
      What it is: Playback of music or audio directly from the watch, with or without a phone nearby.
      When it matters: When you want audio, calls, or voice features on the watch itself.

      Importance: MEDIUM

      Withings Steel Hr 40mm does not support music playback, the average smartwatch does. 53.9% of smartwatches support music playback.
    • No gyroscope
      Withings Steel Hr 40mm does not include a gyroscope, the average smartwatch does. 64.6% of smartwatches include a gyroscope.
      What it is: A motion sensor that measures rotation and helps interpret wrist movement more accurately.
      When it matters: When you track workouts and want better training data.

      Importance: MEDIUM

      Withings Steel Hr 40mm does not include a gyroscope, the average smartwatch does. 64.6% of smartwatches include a gyroscope.

    Graphic comparison of Withings Steel Hr 40mm and other Smartwatches

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    Third-party reviews

    (Reviews last updated: April 2026)

    What customers like about Withings Steel Hr 40mm?

    • Elegant and stylish traditional analogue watch design that suits both casual and formal wear
    • Exceptional battery life, often lasting up to 25 days or longer on a single charge
    • Lightweight and slim profile (13mm thick) making it comfortable for all-day use and sleep tracking
    • Effective silent vibrating alarm for gentle waking without disturbing others
    • Water-resistant up to 50 meters, suitable for swimming and showering
    • User-friendly Health Mate app with detailed activity and sleep score reporting

    What customers dislike about Withings Steel Hr 40mm?

    • Small monochrome digital display can be difficult to read, especially in bright sunlight or at night
    • Limited notification functionality, only showing scrolling headers for calls, texts, and calendar events
    • Magnetic charging dock can be fiddly to align and lacks a secure 'click' mechanism
    • Occasional inaccuracies in step counting when arms are not moving naturally (e.g., pushing a stroller)
    • Heart rate monitoring can show lag or inconsistency during high-intensity workouts
    • Absence of built-in GPS requires a connected smartphone for accurate distance tracking during runs

    Expert reviews

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    wareable.com
    04/01/2017
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    techadvisor.com
    03/02/2017
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    cnet.com
    01/02/2017
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    techradar.com
    28/03/2019
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    mountainsandmacros.co.uk
    27/02/2026
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    expertreviews.co.uk
    27/02/2026
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    macworld.com
    19/01/2017
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    tomsguide.com
    27/02/2026
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    au.pcmag.com
    02/02/2017
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    pcmag.com
    01/02/2017
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    theaureview.com
    21/07/2020
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    C
    consumer.org.nz
    19/10/2023
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    F
    fitness-uhr.net
    20/04/2017
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    D
    derbund.ch
    08/02/2017
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    testr.at
    26/04/2019
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    C
    computerbase.de
    27/03/2017
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    heise.de
    29/03/2018
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    inside-digital.de
    09/04/2017
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    android-user.de
    08/02/2024
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    J
    justegeek.fr
    21/02/2017
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    lesnumeriques.com
    11/02/2017
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    frandroid.com
    20/09/2023
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    darty.com
    07/06/2019
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    nakan.ch
    18/10/2018
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    journaldugeek.com
    14/12/2018
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    commeuncamion.com
    15/05/2017
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    C
    computerhoy.20minutos.es
    10/07/2019
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    M
    macitynet.it
    26/06/2022
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