Xiaomi Watch S4 41mm vs Xiaomi Mi Band 9 comparison

Show Only Differences Highlight Differences	Xiaomi Watch S4 41mm	Xiaomi Mi Band 9
key specs
Display Size	41mm	-
Strap Material	Milanese	-
Dial Shape	Round	Rectangle
Ideal For	Unisex	Unisex
general
Brand	Xiaomi	Xiaomi
Model	Watch S4 41mm	Mi Band 9
Release date	September 24, 2025	July 19, 2024
Dial Shape	Round	Rectangle
Strap Material	Milanese	-
Size	Regular	Regular
Touchscreen	1.32	1.62
Water Resistant	5ATM	5ATM
Water Resistance Depth	50 m	-
Usage	Regular	Regular
Dial Material	Stainless steel	-
Ideal For	Unisex	Unisex
Interchangeable Strap	-	Yes
dimensions
Width	41.2	21.6
Height	41.2	46.5
Diameter	9.5	-
Weight (g)	32.00	15.80
Thickness	-	10.99
product details
Sensor	Heart rate sensor (with blood oxygen sensor), Accelerometer, Gyroscope, Ambient light sensor, Electronic compass, Barometer sensor, Temperature sensor	Optical heart rate, blood oxygen, six-axis motion
Battery Type	320mAh	233
Battery Life	8 days	-
connectivity features
Call Function	Yes	-
Bluetooth	Yes	Yes
Bluetooth Version	5.4	5.4
GPS	Yes	-
platform and storage features
Operating System	Xiaomi HyperOS 3	HyperOS
camera and display features
Display Resolution	466 × 466	192 x 490
Display Size	41mm	-
Other Display Features	1500nits, 60Hz refresh rate	-
fitness and watch functions
Step Count	Yes	Yes
Heart Rate Monitor	Yes	Yes
Altimeter	Yes	-
Compass	Yes	-
Calendar	Yes	Yes
Alarm Clock	Yes	-
Date & Time Display	Yes	Yes
Language	English	-
audio and video features
Speaker	Yes	-
Microphone	Yes	-

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