BAKTH Blue LED Backlit Gaming Keyboard and Seven Color Automatic Backlit Gaming Mouse Combo + BAKTH Customized Mouse Pad As Gift [12-Month-Warranty] The usage of light keyboard: You can just press the light butten then the keyboard's blue LED backlighting will turn on. The seven color backlit DPI mouse with 3 preset levels (800, 1600, 2000). BAKTH is OEM authorized and high quality. This keyboard and mouse set has been passed CE FCC ROSH Certification. Ergonomic, ultra-low profile keyboard and mouse. Rubber side pads for improved stability. System Requirements: PC with USB port. Windows XP/ Vista/ Win7/ Mac/ IBM PC/ Win8. Package contents: 1 x BAKTH LED gaming keyboard, 1 x BAKHT seven color backlit mouse, 1 x BAKTH customized mouse pad as gift.