I7S smart sports bracelet watch

Chip: MTK2502C
Memory size: 64+128Mb
Size (D*H)(mm): 44.6*38*10.7
Buttons: power button, return button
Battery: 220mAH
Size: square screen 1.54
Resolution: 240*240
Button method: full touch + gesture + physical button
GPS: None
Vibration motor: support
Heart rate sensor: support EM7028
Charging method: magnetic charging
Bluetooth: BT 4.0 BLE
Shell: aluminum alloy shell
Built-in battery: voltage 4.2V