100% brand new and high qualityErgonomically designed, make the mouse better.It is more comfortable on the hands than a regular mouse.2.4 GHzWireless mouse with a nice touchThe mouse with LED light is very fancy.When you are not using the mouse, turn it off.It can save energy.Plug and play, no driver neededThe mouse adds a side button, it is convenient to browse the webThe mouse was packed in a bubble bag, don't worry, we checked the package is very safeThe dongle can be stored neatly in the mouse when not in useReceiver storage space and easy to carrySystem support: Windows 2000, Windows XP, Windows 7, Windows Vista, Windows 98, Mac OS, Windows ME, Windows 8Specification:Position: vertical mouseType: Wireless Memorandum of UnderstandingDesign: ergonomic shape memorandum of understandingBlack colourPower supply: 2 x AAA battery (not including)Dimension: 125 * 65 * 82mmNI weight: 109Adjustable DPI: 800-1200-1600Button: 6 Buttons (Left / Right Button, Forward / Back Button, DPI Button, ScollerMaterial: ABS