REDUCE HEALTH PROBLEMS The vertical ergonomic mouse Ewent EW3156 is a good solution for many people who spend more than a few hours a day on a computer. Many common symptoms of hand/mouse-related strain are avoided and reduced by using this ergonomic mouse. The vertical design of the mouse allows you to work comfortably with a more natural grip. OPTICAL PRECISION AND SCROLL Now you can enjoy optical precision with 1000 dpi. Equipped with five buttons and scroll, the mouse supports all common functions. Specifications: Sensor: Optical Resolution: 1000 DPI Interface: USB Cable length: 1.25m Product dimensions: 65 x 80 x 100 mm