1.88” HD 240 x 280 IPS, Processor: 8762DT, Size: 45 x 38 x 11 mm, Strap: Silicone material, Bluetooth: BT 5.0, Charge: Magnetic charge, Touch screen: Full touch screen, Battery: lithium battery 3.7V/260mAh, Water proof IP67, APP: RDFIT, Material: Zinc alloy.