Ergonomic design: reduces effort and pressure, your hand in a natural position, rest. Ideal for people who work with the computer for a long time every day. Detachable Wrist Rest: The detachable wrist rest can let your forearm and mouse become an integral part and make you lift your wrist off the ground, which protects your wrist from friction when moving the mouse. 1000/1600/2400 DPI resolution optical sensor technology provides more sensitivity than standard optical mice for smoother and more precise movement over a wide range range of surfaces. Added forward/back buttons for ease when navigating web pages, best choice for gamers and people who work on the computer for a long time. Product dimensions: 134x 96 x 83mm; product weight: 100g; Note: Powered by 1 * AA battery (not included). Compatible with Windows 7, 8, 10, Windows XP, Vista, me, 2000 and Mac OS, or newer system Ergonomic design: reduces strain and pressure, your hand in a natural position, rest. Ideal for people who