Key features
1.4-inch square colorful display with a pixel density of 323ppi.
support heart rate monitoring, sleep tracking, and sedentary monitoring.
24-hour heart rate changes, resting heart rate for the past 30 days.
come in 11 workout modes, 5atm waterproof.
powered by a 230mah battery, up to 9 days of typical usage.
support bluetooth 5.1, android 5.0, and ios 10 or above.