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Description
Bluetooth connection
Bluetooth V5.1
Main body size
45.2*37.2*11.1mm
Sensors
Heart rate sensor, motion sensor, blood oxygen sensor
Strap width
20mm
Watch weight
48.6g (with strap)
Display
1.78″ AMOLED display
Resolution
368×448
Battery capacity
230mAh
Battery life
About 12 days (24 hours of heart rate monitoring)
System requirement
Android 6.0 and above, iOS 11.0 and above. Supported functions will vary with different watches, mobile phones, and countries.
Short Review: https://www.youtube.com/watch?v=QWpMIFOJfzA&t=379s
Haylou RS4 SmartWatch
Reviews
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