Withings Scanwatch Light vs Xiaomi Watch S3

What Scanwatch Light does better (2) and where Watch S3 wins (0) — every spec side by side.

Withings · 2023Scanwatch Light

8.1Score

2 advantages≈ $190

Higher score

Xiaomi · 2023Watch S3

8.0Score

0 advantages≈ $120

4.9Health tracking4.9

9.0Build & durability4.7

Dimensions

Size comparison

Scanwatch LightWatch S3

	Scanwatch Light	Watch S3	Difference
Case size	37 mm	47 mm	−10 mm
Weight	27 g	44 g	−17 g

Drawn to the same scale from the official dimensions (front and side).

Watch S3 has no measurable advantages in this pair.

Specifications

Only differences	Withings Scanwatch Light≈ $1908.1	Xiaomi Watch S3≈ $1208.0
Design & durability
Case size	37 mm	47 mm
Weight	27.1 g	44 g
Thickness	—	12 mm
Height	—	47 mm
Width	—	47 mm
Case material	Stainless steel	Aluminium
Lens / cover glass	Gorilla Glas Gorillaglas	Scratch/drop-proof glass
Strap material	—	Fluorelastomer
Water resistance	5 ATM	5 ATM
Water rating (maker)	50 m / 5 bar / 5 ATM	50 m / 5 bar / 5 ATM
Colours	—	Black, Silver, Brown
Display
Screen size	—	1.43″
Display technology	OLED	AMOLED
Panel	OLED	AMOLED
AMOLED / OLED display	Yes	Yes
Touchscreen	—	Yes
Resolution (width)	—	466 px
Resolution (height)	—	466 px
Pixel density	—	326 ppi
Peak brightness	—	600 nits
Refresh rate	—	60 Hz
Battery
Battery life (smartwatch mode)	30 days	12 days
Battery capacity	—	486 mAh
Battery type	Li-Ion	Li-Po
Charging	ohne, Ladestation	—
Health sensors
Optical heart rate	Yes	Yes
Blood oxygen (SpO2)	—	Yes
ECG	Yes	Yes
Sleep tracking	Yes	—
Sensors	heart rate, accelerometer	Accelerometer, gyro, compass, barometer, heart rate, SpO2
Sports & navigation
Built-in GPS	Yes	Yes
Dual-band GPS	—	Yes
Satellite systems	GPS	GLONASS, GALILEO, BDS, QZSS
Barometric altimeter	—	Yes
Compass	—	Yes
Connectivity
NFC payments	—	Yes
LTE (cellular)	—	Yes
eSIM	—	Yes
Bluetooth	2	5.2
Smart features
Speaker	—	Yes
Platform
Operating system	HealthSense OS 3	HyperOS
Platform	Proprietary	Proprietary
Works with	iOS, Android	iOS, Android