All-day activity tracking: Track steps, distance, calories burned, active minutes, you can check daily activity and time on OLED display or APP .Fitness Band Smart Band. This watch has USB Port you need to attach the USB port with your normal mobile charger or laptop to charge the watch. Fitness band for women. This fitness band will only work after installing fitness band application from play store. To set time of watch you have to install fitness band application.YOU will receive bar code please scan it to download the application. Don't connect band directly with bluetooth u need to connect it from APP