Color Black Brand Genius Model LeiShen 87 Quantity 1 Set Material Aluminium alloy Type Gaming Interface USB 2.0 Wireless or Wired Wired Bluetooth Version No Back-lit Yes Key Force 40~60 Key Travel 2 cm Powered By USB Battery included or not No Waterproof No Supports System Win xpWin 2000Win vistaWin7 32Win7 64Win8 32Win8 64Mac OS XLinuxAndroid 2.xAndroid 4.x Other Features Life can reach 50 million hours; A S D W eight keys with a blue backlight; 87 key keyboard functions do not conflict with the strike; A shortcut key: FN convenient to use Packing List 1 x Keyboard 1 x USB cable 1 x Key puller 8 x Replacement keys 1 x Chinese user manual