This wireless mouse is specially designed with a vertical shape which provides a uniquely comfortable ergonomic mouse experience. Antimicrobial coating resists germs & bacteria on the mouse surface. Buttons are conveniently located on the side allowing for intuitive control & faster back & forward browsing. The switchable dpi (1000 / 1600 / 2400) provides for two levels of control. Its optical sensor tracking method lets you work on most surfaces with better speed & accuracy. It includes a nano receiver to offer you up to 33 ft of wireless freedom & eliminates the constraints that wired mice often cause. The iMouse A20 is plug & play & requires no drivers. Connector / Port / Interface: USB; Left / Right Hand Use: Right; Mouse Technology: Optical; Wired / Wireless: Wireless.