Mice & Trackballs Notice: This mouse backward button and forward button cannot be used for Macbook andApple Computer This mouse has a sleep function, 3-5 minutes is normal sleep, shake the mouse can wake up, 8-10 minutes is deep sleep, need to pre the left and right keys to wake up This is opto-electronic mouse, it need to be added the mouse pad, then the mouse will work well! Feather : 100% brand new and high quality Ergonomically designed, it makes mouse more better grip. So it is more convenient for hands than ordinary mouse. 2.4 GHzWirele mouse with comfortable touch The mouse with LED light ,it is very fancy. When you don't use the mouse, please you switch OFF. It can save power. Plug and play mode, no need driver The mouse add side button, it is convenient to browse web The mouse was packed by bubble wrap bag, don't worry, we had checked that the package is very safe The dongle can be stored into the mouse neatly when it is not use Receiver storage space and carrying easily System support: Windows 2000, Windows XP, Windows 7, Windows Vista, Windows 98, Mac OS, Windows ME, Windows 8 Specification: Item: Vertical Mouse Type : Wirele Mous Design:Ergonomic Mous Color: Black, Pink Power Supply : 2 x AAA Battery (Not Including ) Demension:125*65*82m Net Weight : 109 Adjustable DPI :800-1200-1600 Button : 6 Buttons (Left/Right Button, Forward/Backward Button, DPI Button, Scoller Material: ABS PackageIncluded: 1 x Wirelevertical Right hand mous 1x USB Receiver