Qihang(TM) OLED Smart Watch Anti-lost Bluetooth 3.0 Bracelet Wrist Watch Design with answer call /Call Vibration/Caller ID and LED Time Display for IOS iPhone Android Samsung and Most Smartphone (Yellow)

Specification: Gender Unisex Style Fashion & Casual Watches Categories Digital watch Shape of The Dial Arch Movement Type Digital watch Display Type Numbers Screen OLED capacitive touchscreen display Pedometer 3D gravity sensor gyro Memory 32M Speaker 0.9W microphone 38DB flat vibration motor: 8 x 2.7 mm Bluetooth version 3.0 Battery capacity 250mAh Charge time 2-3 hours Standby time 168 hours Charging DC 5V / 1A (Please check the charger when charging specification) Charging interface Universal standard for micro USB Product Weight 0.04 kg Product Size 7.3 x 6.0 x 2.9 cm / 2.9 x 2.4 x 1.1 inches Thickness 1.2 cm / 0.5 inch Diameter 2.9 cm / 1.1 inch Inner perimeter About 18.0 cm / 7.1 inch