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Xiaomi Watch S4 15th Anniversary Edition vs Fire Boltt Thunder

Xiaomi Watch S4 15th Anniversary Edition vs Fire-Boltt Thunder comparison

Show Only Differences Highlight Differences	Xiaomi Watch S4 15th Anniversary Edition	Fire-Boltt Thunder
key specs
Display Size	36mm	33mm
Compatible OS	Android 8.0 or above, iOS 12.0 or above	-
Dial Shape	Round	Round
Display Type	AMOLED	AMOLED
Ideal For	Unisex	Unisex
Strap Colour	-	Black, Gold, Grey
Strap Material	-	Silicone
general
Brand	Xiaomi	Fire-Boltt
Model	Watch S4 15th Anniversary Edition	Thunder
Release date	May 23, 2025	March 11, 2022
Model Name	Xiaomi Watch S4 15th Anniversary Edition	Thunder
Dial Colour	Black	-
Dial Shape	Round	Round
Size	Regular	Regular
Touchscreen	1.43	-
Interchangeable Strap	Yes	-
Water Resistant	5 ATM	IP68
Usage	Regular	-
Ideal For	Unisex	Unisex
Model Number	-	BSW028
Strap Colour	-	Black, Gold, Grey
Strap Material	-	Silicone
dimensions
Width	47.3	46
Height	47.3	46
Thickness	12	12
Weight (g)	44.50	64.00
product details
Sensor	Heart Rate Monitor, Stress, Sleep	-
Compatible Device	Android and iOS	-
Battery Type	486mAh	-
Battery Life	-	10 days
connectivity features
Bluetooth	Yes	-
Bluetooth Version	5.3	5.0
Wi-Fi	Yes	-
GPS	Yes	-
Other Connectivity Features	NFC, Galileo, Glonass, Beidou, QZSS	-
Call Function	-	Yes
Call Features	-	Bluetooth Calling
platform and storage features
Operating System	HyperOS 2	-
Compatible Operating System	Android 8.0 or above, iOS 12.0 or above	-
camera and display features
Display Resolution	466 x 466	360x360
Display Size	36mm	33mm
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	-
Number of Buttons	-	2
Other Fitness Features	-	Body Temperature, SpO2 Monitoring, Sleep Tracking,

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