Door access control NFC Spearhead Smart Sport 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:1.53-inch; Touch Panel：Full touch screen G+F Resolution:360*360 Memory:RAM:640+32KB ROM:128M; Compatible System:Android 5.0+/IOS 10.0+ Battery Capacity:495mAh; Use Time:5 days Charge Time:200min; Charging Method:Wireless charging Door access control