The ergonomic right-handed mouse for comfortable and extended use. The compact nano receiver uses 2.4 GHz wireless technology to reduce interference in office environments and can be stored inside the mouse itself when not in use. It is perfect to use both with desktop and mobile devices. The mid-size design is large enough to fit right in your hand, yet small enough to easily pack into a bag when traveling. A high-definition optical sensor (800-1600 dpi) delivers precise, responsive cursor control on a wide variety of surfaces. Works up to 12 months on 2 AAA batteries, which are included. - Mid-size ergonomic design follows the natural curvature of the hand and maximizes comfort during prolonged use - Soft side panels and contoured buttons maintain both comfort and grip - High-definition optical sensor (800/1200/1600 dpi) provides smooth cursor control and accurate tracking - Safe 2, 4 GHz wireless technology reduces the risk of interference and is ideal for tidy office environments - Clickable scroll wheel is ideal for quickly scrolling through documents - Compatible with Windows® 10, 8.1, 8, 7 and macOS®