I7S smart sports bracelet watch $ 37.32 Chip: MTK2502C Memory size: 64+128Mb Size (DH)(mm): 44.63810.7 Buttons: power button, return button Battery: 220mAH Size: square screen 1.54 Resolution: 240240 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
