Material :100% silicon rubber ,Silicone Wristband with USB Driver(silicone usb driver,silicon usb band) Silicone Wristband with USB Driver(silicone usb driver,silicon usb band) (1) Material :Made ... , 512MB, 1G, 2G, 4G(5) Both USB 1.1 and 2.0 available(6) Driverless installation in Windows 98, 2000, XP, Vista ...