Brand Genius Model G7 Quantity 1 Color Black Material ABS Key Number 112 Connection Method Wired Power Supply USB OS System Windows XP Windows Vista Windows 7 Other Features On the right of keyboard there are buttons of my computer counter homepage and email; On the left there are stop/start volume+ volume- and mute; Scroll Lock button can on/off backlight; Gold-plated USB oxidize and interference resistant; Backward and forward easy to browse; Great hand feeling; Three different DPI; Keyboard will show blue red and colorful light; 5 buttons on mouse unique anti-slip mouse wheel; After-sale service: change new within one year Packing List 1 x Keyboard (140cm) 1 x Mouse (150cm)