Work naturally Thanks to its ergonomic design and comfortable thumb rest, you can work or study effortlessly for hours at the office or at home. The vertical layout brings your underarm and wrist into a natural position which relaxes the muscles in your hand, wrist and arm. The rubber coating of this mouse makes sure your grip remains firm while working for longer periods of time. Accurate control Who said ergonomics was boring? Simply plug in the micro-USB receiver into a USB port and you have access to an 800/1200/1600 dpi optical sensor for accurate control. Switch dpi with the dedicated button or browse quickly through different web pages with the two thumb buttons. Smart use Experience the convenience of a wireless mouse and keep your desk organized. The receiver of this mouse allows it to work wirelessly within a range of 10 meters. It also features an on/off switch so that you can save energy by turning off the mouse when you are not using it.