Kensington 72117 PocketMouse Pro Wireless Compact Travel USB Mouse (PC/Mac) DiamondEye optical technology offers accurate tracking and precise guidance, with the additional convenience of no required cleaning Compact shape is comfortable for both right- and left-handed use RF receiver stores in the mouse, has a 3-foot range, and turns the mouse off when stored to save battery life Backed by a one-year manufacturer's warranty Three buttons and a scroll wheel make fast work of navigation and reduce repetitive tasks to a single click