Xiaomi Watch S4 15th Anniversary Edition vs Xiaomi Smart Band 9 Pro comparison

Show Only Differences Highlight Differences	Xiaomi Watch S4 15th Anniversary Edition	Xiaomi Smart Band 9 Pro
key specs
Display Size	36mm	-
Compatible OS	Android 8.0 or above, iOS 12.0 or above	-
Dial Shape	Round	Rectangle
Display Type	AMOLED	AMOLED
Ideal For	Unisex	Unisex
general
Brand	Xiaomi	Xiaomi
Model	Watch S4 15th Anniversary Edition	Smart Band 9 Pro
Release date	May 23, 2025	October 29, 2024
Model Name	Xiaomi Watch S4 15th Anniversary Edition	-
Dial Colour	Black	-
Dial Shape	Round	Rectangle
Size	Regular	Regular
Touchscreen	1.43	1.74
Interchangeable Strap	Yes	-
Water Resistant	5 ATM	5 ATM
Usage	Regular	Regular
Ideal For	Unisex	Unisex
dimensions
Width	47.3	43.27
Height	47.3	32.49
Thickness	12	10.2
Weight (g)	44.50	24.50
product details
Sensor	Heart Rate Monitor, Stress, Sleep	heart rate, SpO2, steps
Compatible Device	Android and iOS	-
Battery Type	486mAh	350
Battery Life	-	21 days
connectivity features
Bluetooth	Yes	Yes
Bluetooth Version	5.3	5.4
Wi-Fi	Yes	-
GPS	Yes	-
Other Connectivity Features	NFC, Galileo, Glonass, Beidou, QZSS	GNSS, NFC
platform and storage features
Operating System	HyperOS 2	HyperOS 2
Compatible Operating System	Android 8.0 or above, iOS 12.0 or above	-
camera and display features
Display Resolution	466 x 466	336 x 480
Display Size	36mm	-
Display Type	AMOLED	AMOLED
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

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