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Xiaomi Watch S4 15th Anniversary Edition vs Realme TechLife Watch SZ100

Xiaomi Watch S4 15th Anniversary Edition vs Realme TechLife Watch SZ100 comparison

Show Only Differences Highlight Differences	Xiaomi Watch S4 15th Anniversary Edition	Realme TechLife Watch SZ100
key specs
Display Size	36mm	43mm
Compatible OS	Android 8.0 or above, iOS 12.0 or above	Android 5.0+, iOS 11+
Dial Shape	Round	Rectangle
Display Type	AMOLED	-
Ideal For	Unisex	Unisex
Strap Material	-	Silicone
general
Brand	Xiaomi	Realme
Model	Watch S4 15th Anniversary Edition	TechLife Watch SZ100
Release date	May 23, 2025	May 18, 2022
Model Name	Xiaomi Watch S4 15th Anniversary Edition	-
Dial Colour	Black	-
Dial Shape	Round	Rectangle
Size	Regular	Large
Touchscreen	1.43	-
Interchangeable Strap	Yes	Yes
Water Resistant	5 ATM	IP68
Usage	Regular	Fitness and Outdoor
Ideal For	Unisex	Unisex
Strap Material	-	Silicone
dimensions
Width	47.3	35.8
Height	47.3	-
Thickness	12	11.6
Weight (g)	44.50	34.00
product details
Sensor	Heart Rate Monitor, Stress, Sleep	3-axis accelerometer, optical heart rate sensor, SpO2
Compatible Device	Android and iOS	Android, iPhone
Battery Type	486mAh	-
Notification	-	Yes
Battery Life	-	12 days
connectivity features
Bluetooth	Yes	Yes
Bluetooth Version	5.3	5.1
Wi-Fi	Yes	-
GPS	Yes	-
Other Connectivity Features	NFC, Galileo, Glonass, Beidou, QZSS	-
platform and storage features
Operating System	HyperOS 2	-
Compatible Operating System	Android 8.0 or above, iOS 12.0 or above	Android 5.0+, iOS 11+
camera and display features
Display Resolution	466 x 466	240x280
Display Size	36mm	43mm
Display Type	AMOLED	-
Other Display Features	-	218ppi pixel density, 530 nits of screen brightness
fitness and watch functions
Step Count	Yes	Yes
Calorie Count	Yes	-
Heart Rate Monitor	Yes	Yes
Alarm Clock	Yes	Yes
Date & Time Display	Yes	Yes
Language	English	-
Calendar	-	Yes
Chronograph	-	Yes
Other Fitness Features	-	24 sports modes, sleep monitor

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