bKey Features/bbr /br /liInterface USB/liliCable Length 1500mm/liliNumber of Keys 88 Keys/liliKeyboard Weight 425g/liliKey Pitch 19.0 mm/liliMTBF 10 Million Keystrokes/liliWorking Voltage 5V/liliWorking current 10mA/liliDimensions 315mm x 123mm x 27mm L x W x H/liliSystem Requirement Compatible with Windows XP ME Vista 2000 7 8 10 Linux and Mac/li