WatchFitTool
Xiaomi Watch S3 eSIM — case dimensions and design

Xiaomi · 2023

Watch S3 eSIMSize, Dimensions & Wrist Fit

Case Width

47mm

Thickness

12mm

Battery

15 days

Weight

44g

The Xiaomi Watch S3 eSIM sits best on flat wrist widths of about 49–67mm (≈ 13.1–17.9cm wrist circumference). Adjust the slider below to check your wrist.

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The Watch S3 eSIM in short

The figures that decide whether this watch suits you, pulled out of the full specification sheet further down.

  • Between 3 hours and 15 days per charge depending on the power mode — smartwatch at best, gps at worst.
  • Water rated to 50 m.
  • 44g on the wrist. Lighter than 84% of the 47mm watches we have weights for.
  • 1.43 inches OLED/AMOLED display, always-on capable.

Does the Watch S3 eSIM fit your wrist?

Drag the slider to your wrist width and see the Watch S3 eSIM overlaid at true scale. Lug-to-lug — not case diameter — decides whether a watch overhangs your wrist.

Fit tool

Watch Fit Tool

For sports watches, lug-to-lug (L2L) is what matters most — it decides whether a watch overhangs your wrist. Bulky is fine; overhang is not.

Your wrist
mm
≈ 146.9mm around

Xiaomi Watch S3 eSIM

Case 47.0mm · Lug-to-lug 47.0mm · Thickness 12.0mm · 44g

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Sweet Spot

47mm on a 55mm wrist

10:09TUE 12lug to lug 47.0mmyour wrist 55.0mm

Across the wrist it works — 4.0mm spare each side — but wide enough that the edge of the case back lifts clear of the skin.

On a 55mm wrist the sweet spot is 47–53mm lug to lug. This one is 47mm.

How to Measure

Measure where you wear it, just below the wrist bone. Either of these works — the tool converts between them.

  1. 1. Flat width — arm flat on a table, palm up. Measure straight across the top of the wrist, bone to bone, ignoring the curve down the sides.
  2. 2. Around — a tape, or a strip of paper marked and held against a ruler, snug the whole way round.
Complete Wrist Measurement Guide →
Against one you know

Leather: Attaches at the lugs, so the case back rests on your skin. Thins and softens with wear. Typical figures, not this model’s own.

Show the measurements
  • Across the wrist4.0mm spare each side

    Fills the wrist without reaching the edge.

  • Off the wrist12.0mm off the skin

    Normal sports-watch height for a wrist this size. (12.0mm case, back against the skin)

  • How it seats~6.1mm under the rim

    Wide enough that the edge of the case back lifts clear of the skin.

  • Weight on the wrist44g

    Light enough to forget you have it on. (0.8g per mm of wrist)

Happy with the fit? Check current availability for the Watch S3 eSIM.

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2D Dimension Schematics

The Watch S3 eSIM drawn to scale — from above, and in profile against the wrist.

Highlight
From above — true scale
From the side — how far it sits off the wrist
  • Xiaomi Watch S3 eSIM47mm · 12mm thick

3D preview

Xiaomi Watch S3 eSIM on a wrist

On an arm sized to your own wrist — the view a product photo never gives you.

Open 3D try-on

Shapes are built from published measurements, not manufacturer 3D models — accurate proportions, generic dial.

How long the Watch S3 eSIM lasts, by power mode

Runtime changes by a factor of 120 depending on what you leave switched on. Bars are scaled against the longest mode.

  • Smartwatch15 days
  • Training3 hours
  • GPS3 hours

How the Watch S3 eSIM ranks on battery

Against the 32 Xiaomi watches in our database, ranked on each figure Xiaomi publishes.

  • Everyday use15 days#6 of 32
  • Capacity486 mAh#11 of 32

Watch S3 eSIM specifications

The figures that decide a purchase, followed by every line Xiaomi publishes.

Battery life
15 days
Display
1.43 inches
Resolution
466 x 466 px
Water rating
5 ATM

Full specification sheet

103 published lines across 8 groups, unedited

Design

width
47
height
47
volume
26.51 cm³
weight
44 g
thickness
12
ATM rating
5 ATM
resolution
466 x 466 px
screen size
1.43 inches
Display type
OLED/AMOLED
Has a display
pixel density
326 ppi
water resistance
Waterproof
Always-On Display
has a touch screen
is designed for kids
waterproof depth rating
50 m
Watch band is replaceable
Has sapphire glass display
has branded damage-resistant glass

Battery

battery life
15 days
battery power
486 mAh
has wireless charging
has a removable battery
battery life with GPS on
3 hours
Has a solar power battery
has a rechargeable battery
battery life in training mode
3 hours

Sensors

has GPS
has a compass
Has a barometer
has a gyroscope
Has a cadence sensor
has an accelerometer
Monitors perspiration
Has a heart rate monitor
Has a temperature sensor
Monitors blood oxygenation levels

Features

release date
2023-10-26
Has a stopwatch
Has smart alarm
warranty period
1 years
Has call control
Has silent alarm
Has notifications
Has ECG technology
Locates your phone
has fall detection
has voice commands
Acquires GPS faster
Has vibrating alerts
number of microphones
1
Can be used to answer calls
measures resting heart rate
has irregular heart rate warnings
has fast/slow heart rate notifications
Has a built-in camera remote control function

Connectivity

has NFC
SIM cards
1 eSIM
supports ANT+
supports Wi-Fi
supports Galileo
Bluetooth version
5.2
has a cellular module
Is compatible with iOS
Is compatible with Android

Miscellaneous

Has passcode
Is compatible with Windows
Is compatible with Mac OS X
has an external memory slot
has a battery level indicator
has a socket for a 3.5 mm audio jack
Compatible with external heart rate monitors

App & Software

Free app
Has coaching
Supports routes
Has achievements
Has goal setting
Has exercise diary
Predicts ovulation
Can be personalised
Has weight tracking
Predicts start date
Tracks water intake
Has inactivity alerts
Has period notifications
Has temperature tracking
Doesn’t require account
Provides activity reports
Displays fertile window notifications
Counts how many calories you've burned

Activity tracking

Measures pace
Tracks distance
Tracks elevation
Designed for golf
Tracks your sleep
Tracks steps taken
Designed for diving
Has a route tracker
Has exercise tagging
Tracks calorie intake
Provides sleep reports
Detects activities automatically
Has a stroke counter for swimming

Watch S3 eSIM — Frequently Asked Questions

Will the Xiaomi Watch S3 eSIM fit my wrist?

The Xiaomi Watch S3 eSIM looks balanced on flat wrist widths of roughly 49–67mm (about 13.1–17.9cm circumference). Drag the slider above to check it against your own measurement.

How long does the Xiaomi Watch S3 eSIM battery last?

Between 3 hours and 15 days per charge, depending on the power mode. Xiaomi rates Smartwatch at 15 days and GPS at 3 hours; the chart above lists all 3 modes.

How does the Xiaomi Watch S3 eSIM battery compare with other Xiaomi watches?

At 15 days in everyday use it ranks #6 of the 32 Xiaomi watches in our database — the top 19% of the range. The full ranking, including GPS and power-saving figures, is on our Xiaomi battery life comparison.

Is the Xiaomi Watch S3 eSIM thick for a 47mm watch?

At 12mm, thinner than 76% of 47mm watches, so it slides under a cuff more easily than most of its size. Thickness, not case width, is what decides whether a watch catches on a shirt cuff.

What other watches are the same size as the Xiaomi Watch S3 eSIM?

Garmin Fenix 9 47mm, Oppo Watch X3, CMF Watch 3 Pro, Amazfit Balance 2 all sit within half a millimetre of the Xiaomi Watch S3 eSIM's 47mm case, so they cover the same amount of wrist.

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