description this 35 key single hand professional gaming keyboard with programmable advanced control, which give you the better touching feeling and make your own special keyboard.   luminous: led color backlight, more cool at night.   mini portable, 35 keys, mini design provide a super easy single hand operate experience.   fit for you hands and wrist, simplify the complex operation procedure, beat the rival faster in the games.   the keyboard supports running on win 2000, win xp, win me, vista, win7, win8, androed, linux, apple and other operating systems.   product parameters: name: one-handed gaming keyboard product interface: usb 2.0 eyboard standard: mini keyboard operation style: membrane press the number of keys: 35 keys product line length: 1.6m working current: 100ma product net weight: 350g product size: 26*18*4cm package weight:415g package size:26*19*4cm fn combination function: support multimedia function keys, the operation is as follows: (1).fn+f1 button: music player (2).fn+f2 key: volume decrement (3).fn+f3 button: increased decrement (4).fn+f4 button: mute (5).fn+f5 key: pause note: this keyboard  has only one backlight color mode same as the picture showing.  package content: 1 * keyboard 1 * user manual