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Xiaomi Watch S4 15th Anniversary Edition vs Noise ColorFit Ultra 2 Buzz

Xiaomi Watch S4 15th Anniversary Edition vs Noise ColorFit Ultra 2 Buzz comparison

Show Only Differences Highlight Differences	Xiaomi Watch S4 15th Anniversary Edition	Noise ColorFit Ultra 2 Buzz
key specs
Display Size	36mm	-
Compatible OS	Android 8.0 or above, iOS 12.0 or above	iOS 11 or above, Android 9.0 or above
Dial Shape	Round	Rectangle
Display Type	AMOLED	-
Ideal For	Unisex	-
Strap Material	-	Silicone
general
Brand	Xiaomi	Noise
Model	Watch S4 15th Anniversary Edition	ColorFit Ultra 2 Buzz
Release date	May 23, 2025	August 17, 2022
Model Name	Xiaomi Watch S4 15th Anniversary Edition	-
Dial Colour	Black	-
Dial Shape	Round	Rectangle
Size	Regular	Regular
Touchscreen	1.43	Yes
Interchangeable Strap	Yes	-
Water Resistant	5 ATM	IP68
Usage	Regular	-
Ideal For	Unisex	-
Strap Material	-	Silicone
dimensions
Width	47.3	45.6
Height	47.3	37.5
Thickness	12	37.5
Weight (g)	44.50	41.40
product details
Sensor	Heart Rate Monitor, Stress, Sleep	SpO2 Sensor, Heart Rate Sensor
Compatible Device	Android and iOS	-
Battery Type	486mAh	-
Notification	-	Yes
Notification Type	-	Call, Message, Alarms, Reminders
Battery Life	-	7 days
Charge Time	-	2 hours
Stand By Time	-	35 days
connectivity features
Bluetooth	Yes	Yes
Bluetooth Version	5.3	5.3
Wi-Fi	Yes	-
GPS	Yes	-
Other Connectivity Features	NFC, Galileo, Glonass, Beidou, QZSS	-
Call Function	-	Yes
Call Features	-	Reject Calls, Take Calls, Call Logs, Dial Pad
platform and storage features
Operating System	HyperOS 2	-
Compatible Operating System	Android 8.0 or above, iOS 12.0 or above	iOS 11 or above, Android 9.0 or above
camera and display features
Display Resolution	466 x 466	-
Display Size	36mm	-
Display Type	AMOLED	-
fitness and watch functions
Step Count	Yes	Yes
Calorie Count	Yes	Yes
Heart Rate Monitor	Yes	Yes
Alarm Clock	Yes	Yes
Date & Time Display	Yes	Yes
Language	English	-
Other Fitness Features	-	100 Sports Modes, Auto Sports Detection
audio and video features
Speaker	-	Yes
Microphone	-	Yes

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