COLMI V33

Chipset: RTL8762C and BK3266.
Heart rate sensor: HS3300.
Screen: 1.08 inch, 240*240 pixel.
Battery: Capacity 175 mAh, time 3~5 days.
Waterproof level: IP67 Waterproof.
APP: Da Fit.
Suitable for mobile phones with Android 4.4 or higher, or iOS 9.0 or higher.