USB Mouse Pad with Bracers Usb Hand Warmer Mouse Pad Hand Warmer Mouse Pad Usb Hand Po Mouse Pad Smile Warmer mouse pad dimension:8.3*7.9 inches(21*20cm),The interior is approximately a circle with an perimeter of 7.1 inches and the height is 3.0 inches. it has enough space to move a mouse.,and the heating pad is supported by computer USB power or 5V phone charger or portable power bank,it also with a wrist rest. Mouse pad cable length:47 inches(120cm),The cable is power only,can not use for data transfer,the mouse needs to connect to an other computer USB port. If does not work(Even if the warranty period is exceeded),do not worry,please contact us immediately,we can re-send a USB heating pad to you. Usb warmer mouse pad compatilble wired Mouse and wireless mouse. The mouse pad is washable except the heating pad.