Xiaomi Watch S4 vs Apple Watch Ultra 2 comparison

Show Only Differences Highlight Differences	Xiaomi Watch S4	Apple Watch Ultra 2
key specs
Dial Shape	Round	Rectangle
Display Type	AMOLED	OLED Retina
Ideal For	Unisex	Unisex
Display Size	-	49mm
Compatible OS	-	iOS
general
Brand	Xiaomi	Apple
Model	Watch S4	Watch Ultra 2
Release date	October 29, 2024	September 12, 2023
Dial Shape	Round	Rectangle
Size	Regular	Large
Touchscreen	1.43	Yes
Interchangeable Strap	Yes	-
Water Resistant	5 ATM	Yes
Usage	Regular	Fitness & Outdoor
Ideal For	Unisex	Unisex
Model Name	-	Watch Ultra 2
Water Resistance Depth	-	100m
dimensions
Width	47.3	-
Height	47.3	-
Thickness	12	-
Weight (g)	44.50	-
product details
Sensor	heart rate, SpO2, steps, sleep tracker	Compass, Always-On Altimeter, heart rate sensor, Accelerometer, Gyroscope, and Ambient light sensor
Battery Type	486mAh	Lithium Ion
Battery Life	15	36 Hours
Maximum Operating Altitude	-	9000
Compatible Device	-	iOS
Notification	-	Yes
Rechargeable Battery	-	Yes
connectivity features
Bluetooth	Yes	Yes
Bluetooth Version	5.2	-
Wi-Fi	Yes	Yes
GPS	Yes	Yes
Other Connectivity Features	NFC, Galileo, Glonass, Beidou, QZSS	Emergency SOS
Call Function	-	Yes
Call Features	-	International Emergency Calling
platform and storage features
Operating System	HyperOS 2	watchOS 10
Compatible Operating System	-	iOS
Processor Name	-	S9 SiP
camera and display features
Display Resolution	466 x 466	-
Display Type	AMOLED	OLED Retina
Display Size	-	49mm
Backlight Display	-	Yes
Other Display Features	-	LTPO OLED Always-On Retina display
fitness and watch functions
Step Count	Yes	Yes
Heart Rate Monitor	Yes	Yes
Date & Time Display	Yes	Yes
Calorie Count	-	Yes
Altimeter	-	Yes
Compass	-	Yes
Calendar	-	Yes
Alarm Clock	-	Yes
Language	-	English
Other Fitness Features	-	Blood Oxgen Sensor, ECG sensor
audio and video features
Speaker	-	Yes
Microphone	-	Yes

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