Ice Watch Smart 3.0 rund vs Xiaomi Watch S4 41mm

What Smart 3.0 rund does better (0) and where Watch S4 41mm wins (4) — every spec side by side.

Ice Watch · 2025Smart 3.0 rund

6.2Score

0 advantages≈ $100

Xiaomi · 2025Watch S4 41mm

7.7Score

4 advantages≈ $130

Higher score

4.7Display6.0

5.0Health tracking9.6

Dimensions

Size comparison

Smart 3.0 rundWatch S4 41mm

	Smart 3.0 rund	Watch S4 41mm	Difference
Case size	42 mm	41.2 mm	+0.8 mm
Thickness	10.5 mm	9.5 mm	+1 mm

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

Smart 3.0 rund has no measurable advantages in this pair.

Specifications

Only differences	Ice Watch Smart 3.0 rund≈ $1006.2	Xiaomi Watch S4 41mm≈ $1307.7
Design & durability
Case size	42 mm	41 mm
Weight	—	32 g
Thickness	10.5 mm	9.5 mm
Height	—	41.2 mm
Width	—	41.2 mm
Case material	Stainless steel	—
Lens / cover glass	Mineralglas Mineralglas	Scratch/drop-proof glass
Strap material	Silikon	—
Water resistance	3 ATM	5 ATM
Water rating (maker)	30 m / 3 bar / 3 ATM	—
Colours	—	Black, Green, White, Gold
Display
Screen size	1.2″	1.32″
Display technology	AMOLED	AMOLED
Panel	AMOLED	AMOLED
AMOLED / OLED display	Yes	Yes
Resolution (width)	390 px	466 px
Resolution (height)	390 px	466 px
Pixel density	—	320 ppi
Peak brightness	—	2,200 nits
Refresh rate	—	60 Hz
Battery
Battery life (smartwatch mode)	3 days	—
Battery capacity	—	320 mAh
Battery type	—	Li-Po
Health sensors
Optical heart rate	Yes	Yes
Blood oxygen (SpO2)	Yes	Yes
Skin temperature	—	Yes
Temperature sensor	—	Yes
Sleep tracking	Yes	—
Sensors	heart rate, SpO2, accelerometer	Accelerometer, gyro, compass, barometer, heart rate, SpO2, thermometer (skin temperature)
Sports & navigation
Built-in GPS	Yes	Yes
Satellite systems	GPS	GLONASS, GALILEO, BDS, QZSS
Barometric altimeter	—	Yes
Compass	—	Yes
Connectivity
NFC payments	—	Yes
LTE (cellular)	—	No
eSIM	—	No
Bluetooth	5	5.4
Smart features
Speaker	—	Yes
Platform
Operating system	Proprietär	HyperOS 2
Platform	Proprietary	Proprietary
Works with	iOS, Android	—