Product information: Interface: USB 2.0 Wearing style: wrist strap Battery capacity: 150MAH Mode of operation: touch Product size: 54.5*46*11.8mm Wristband material: tpu Product weight: 120g (g) Color: black rubber, black leather, black steel, silver rubber, silver leather, silver steel, gun rubber, gun leather, gun steel Packing: Silicone Smart Watch X1