Door access control NFC High-End Smart Sports Watch combines fashion and functionality in one device. Stay on top of your fitness goals, receive notifications, and monitor your health with ease. Ideal for daily wear and sports activities. Specifications: Wireless Version:5.3 Screen Size:1.53inch Resolution:IPS360*360; Memory:RAM: 640+32KB ROM: 64M (external flash) Compatible System:Android5.0+/iOS12.0+; Battery Capacity:315mAh Use Time:4days Standby Time:20days; Charge Time:200minutes Charging Method: Wireless; Touch Panel TP:Full touch screen OGS Door access control