wireless keyboard and mouse combos slim 2.4ghz keyboard 104 keys with receiver for office gaming ergonomic 2 pieces

kit with usb receiver and 3 adjustable dpi ;4 available colors ; 10 meters transmission ; 10 million times button life ; anti splash design ;no batteries are included . keyboard specifications: model: hk8100 color: black with blue; black with red; white with blue; white with red net weight: 900g normal keys: 104 multimedia keys: 10 interface type: usb ergonomics: support dimension: 480(l) x 188(w) x 30(h)mm color of backlight: none system support: windows 7/ windows 8/ vista/ xp/ mac os...or latest power: 2 x aaa batteries (not included)