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Galaxy Watch Ultra vs Watch S4 Sport

Samsung Galaxy Watch Ultra vs Xiaomi Watch S4 Sport

What Galaxy Watch Ultra does better (5) and where Watch S4 Sport wins (1) — every spec side by side.

Samsung · 2024Galaxy Watch Ultra

9.2Score

5 advantages≈ $230

Higher score

Xiaomi · 2024Watch S4 Sport

9.0Score

1 advantage≈ $270

9.0Display8.1

8.6Health tracking5.0

3.1Sports & outdoor4.7

7.9Smart features9.6

9.4Build & durability5.5

Dimensions

Size comparison

Galaxy Watch UltraWatch S4 Sport

	Galaxy Watch Ultra	Watch S4 Sport	Difference
Height	47.4 mm	46.9 mm	+0.5 mm
Width	47.4 mm	46.9 mm	+0.5 mm
Thickness	12.1 mm	12.6 mm	−0.5 mm
Weight	60 g	49 g	+12 g

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

Why is Galaxy Watch Ultra better than Watch S4 Sport?

Water resistance10 ATM vs 5 ATM2×
Storage64 GB vs 32 GB2×
Screen size1.5″ vs 1.43″+5%
Thickness12.1 mm vs 12.6 mm+4%
Resolution (width)480 px vs 466 px+3%

Why is Watch S4 Sport better than Galaxy Watch Ultra?

Weight60.5 g vs 49 g+23%

Specifications

Side by side

Only differences	Samsung Galaxy Watch Ultra≈ $2309.2	Xiaomi Watch S4 Sport≈ $2709.0
Design & durability
Case size	47 mm	47 mm
Weight	60.5 g	49 g
Thickness	12.1 mm	12.6 mm
Height	47.4 mm	46.9 mm
Width	47.4 mm	46.9 mm
Case material	Titanium	—
Sapphire crystal	Yes	Yes
Lens / cover glass	Sapphire crystal glass	Sapphire crystal glass
Strap material	Silikon	—
Water resistance	10 ATM	5 ATM
Ingress protection	IP68	—
Water resistance (IPx)	IPx8	—
Water rating (maker)	100 m / 10 bar / 10 ATM	—
Military-grade (MIL-STD-810)	Yes	—
Colours	Titanium Sliver, Titanium Gray, Titanium White, Titanium Blue	Titanium
Display
Screen size	1.5″	1.43″
Display technology	AMOLED	AMOLED
Panel	Super AMOLED	AMOLED
AMOLED / OLED display	Yes	Yes
Resolution (width)	480 px	466 px
Resolution (height)	480 px	466 px
Pixel density	327 ppi	326 ppi
Peak brightness	—	2,200 nits
Refresh rate	60 Hz	60 Hz
Battery
Battery capacity	590 mAh	586 mAh
Battery type	Li-Ion	Li-Po
Wireless charging	Yes	—
Charging	kabellos, magnetisches Ladekabel, magnetische Ladeschale	—
Health sensors
Optical heart rate	Yes	Yes
Blood oxygen (SpO2)	Yes	Yes
ECG	Yes	—
Skin temperature	Yes	—
Temperature sensor	Yes	—
Sleep tracking	Yes	—
Sensors	Accelerometer, gyro, heart rate, barometer, altimeter, compass, SpO2, temperature (body), temperature (water), BioActive	Accelerometer, gyro, compass, barometer, heart rate, SpO2
Sports & navigation
Built-in GPS	Yes	Yes
Dual-band GPS	Yes	Yes
Satellite systems	GLONASS, GALILEO, BDS	GLONASS, GALILEO, BDS, QZSS
Barometric altimeter	Yes	Yes
Compass	Yes	Yes
Multisport / triathlon mode	Yes	—
Connectivity
NFC payments	Yes	Yes
LTE (cellular)	Yes	Yes
eSIM	Yes	Yes
Wi-Fi	Wi-Fi 4	—
Bluetooth	5.3	5.2
Smart features
Calls from the wrist	Yes	—
Speaker	Yes	Yes
Voice assistant	Yes	—
Music on the watch	Yes	—
Storage	64 GB	32 GB
RAM	2 GB	—
Platform
Operating system	Android Wear OS 5	HyperOS
Platform	Android	Proprietary
Works with	Android	—
Chipset	Exynos W1000	—