Ergonomic work made easy - minimize your health problems! The vertical design of the mouse enables a neutral posture and offers high comfort. This keeps your arm in an untwisted, neutral position when working on the PC or notebook and not forced into a twisted position as when working with a conventional mouse. Lay your arms relaxed on the table and pay attention to the natural hand position - the palms face each other as if shaking hands. This is exactly where this vertical mouse comes in: Just like shaking hands, your arm stays in a relaxed position. Your hand is additionally supported by the mouse's ergonomic design and non-slip surface. The USB mouse has a right and left mouse button, a forward/back button for easy surfing on the web and a dpi selector switch, with which you can switch the sampling rates from 800-1600 dpi during operation. Thanks to an optical sensor, the vertical USB mouse works with the highest precision on almost all surfaces. NOTE: The product is delivered without batteries. Parameters 1. LED illumination800-16002.DPI range1000, 16003.6LED display4.Product belongs to wired network5.Weight: 120g6.Package size 115*75*85mm