Plug and play, for home and office use total size: 365*120*19.5mm (touchpad size:74.5*90mm) weight: 334g (without battery) button of keyboard: 78keys battery: two aaa battery lifespan of key-stoke: 5 million times interface type: usb,2.4ghz wireless wireless range: 10 meters approx sleep time : 8 minutes awaken way: arbitrarily key to awaken operating voltage: 3v low voltage :<2.2v speed current : 0.03ma touchpad working current : <29ma working current : <11ma application: desktop,l aptop system: windows xp、windows 2000、windows vista 7/8/10 mac os , chrome os , linux