CMF Watch 3 Pro — case dimensions and design

CMF · 2025

Watch 3 Pro Size, Dimensions & Wrist Fit

Case Width

47mm

Thickness

14.4mm

Lug-to-Lug

45mm

Weight

51.9g

The Watch 3 Pro looks in proportion on wrists of 14–20 cm (5.5–7.9 in) round, and fills the wrist at 14.5–16.5 cm (45mm lug to lug).

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Does the Watch 3 Pro fit your wrist?

Wrist round (mm left each side)	47mm
14 cm / 5.5 in	Bold (0.1mm)
15 cm / 5.9 in	Sweet spot (1.7mm)
16 cm / 6.3 in	Sweet spot (3.3mm)
17 cm / 6.7 in	Balanced (4.9mm)
18 cm / 7.1 in	Balanced (6.5mm)
19 cm / 7.5 in	Balanced (8.1mm)
20 cm / 7.9 in	Understated (9.8mm)

How the fit model works · Size chart for every wrist

The Watch 3 Pro in short

Between 17.2 hours and 60 days per charge depending on the power mode — battery saver at best, gps at worst.
Water rated to 5 ATM.
51.9g on the wrist.
1.43 inches AMOLED display, always-on capable.

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Size, fit and battery side by side, against any smartwatch we list.

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Watch 3 Pro battery life

Runtime by power mode

Battery Saver60 days
Smartwatch13 days
Heavy use108 hours
GPS17.2 hours

Charges in 1.65 hours

Settings to change and the 24-hour idle test are on the battery check.

2D Dimension Schematics

Top view

Side view

CMF Watch 3 Pro 47mm × 45mm · 14.4mm thick

3D preview

CMF Watch 3 Pro on a wrist

Alternatives to the Watch 3 Pro

Watch 3 Pro specifications

Battery life: 13 days
Display: 1.43 inches
Resolution: 466 x 466 px
Water rating: 5 ATM
Charging: 1.65 hours

Show all specificationsCMF's published specification, for reference · checked September 2026

Design

width: 47
height: 45
volume: 30.46 cm³
weight: 51.9 g
thickness: 14.4
ATM rating: 5 ATM
resolution: 466 x 466 px
screen size: 1.43 inches
Display type: OLED/AMOLED
Has a display: Yes
pixel density: 326 ppi
water resistance: Sweat resistant
Always-On Display: Yes
has a touch screen: Yes
is designed for kids: No
Watch band is replaceable: Yes
Has sapphire glass display: No
Ingress Protection (IP) rating: IP68
has branded damage-resistant glass: No

Battery

charge time: 1.65 hours
battery life: 13 days
battery power: 350 mAh
has wireless charging: No
has a removable battery: No
battery life with GPS on: 17.2 hours
Has a solar power battery: No
has a rechargeable battery: Yes
battery life in training mode: 108 hours
battery life in power save mode: 1440 hours

Sensors

has GPS: Yes
has a compass: Yes
Has a barometer: No
has a gyroscope: Yes
Has a cadence sensor: No
has an accelerometer: Yes
Monitors perspiration: No
Has a heart rate monitor: Yes
Has a temperature sensor: No
Monitors blood oxygenation levels: Yes

Features

release date: 2025-07-22
Has a stopwatch: Yes
Has smart alarm: No
warranty period: 1 years
Has call control: Yes
Has silent alarm: Yes
has HRV tracking: Yes
measures VO2 max: Yes
Has notifications: Yes
Has ECG technology: No
Locates your phone: Yes
has a front camera: No
has fall detection: No
has voice commands: Yes
Acquires GPS faster: No
Has vibrating alerts: Yes
Can be used to answer calls: Yes
measures resting heart rate: Yes
has irregular heart rate warnings: No
has fast/slow heart rate notifications: Yes
Has a built-in camera remote control function: Yes

Connectivity

has NFC: No
supports ANT+: No
supports Wi-Fi: No
supports Galileo: Yes
Bluetooth version: 5.3
has a cellular module: No
Is compatible with iOS: Yes
Is compatible with Android: Yes

Miscellaneous

Has passcode: No
Has auto pause: No
Is compatible with Windows: No
Is compatible with Mac OS X: No
has an external memory slot: No
has a battery level indicator: Yes
has a socket for a 3.5 mm audio jack: No
Compatible with external heart rate monitors: No

App & Software

Ad-free: Yes
Free app: Yes
Has coaching: No
Supports routes: No
Has achievements: Yes
Has goal setting: Yes
Has exercise diary: Yes
Predicts ovulation: Yes
Can be personalised: No
Has weight tracking: Yes
Predicts start date: Yes
Tracks water intake: Yes
Has inactivity alerts: Yes
Has period notifications: Yes
Has temperature tracking: No
Doesn’t require account: No
Provides activity reports: Yes
Displays fertile window notifications: Yes
Counts how many calories you've burned: Yes

Activity tracking

Measures pace: Yes
Tracks distance: Yes
Tracks elevation: Yes
Designed for golf: No
Tracks your sleep: Yes
Tracks steps taken: Yes
Designed for diving: No
Has a route tracker: Yes
Has exercise tagging: Yes
Has multi-sport mode: Yes
Tracks calorie intake: Yes
Provides sleep reports: Yes
Detects activities automatically: Yes
Has a stroke counter for swimming: Yes

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