The Ergoline SRM VS4 vertical wireless mouse is perfect for office use. This ergonomic, wireless mouse ensures a neutral position of your forearm and wrist. This reduces muscle tension allowing you to work comfortably. You can easily operate the 3 slanted downwards buttons with your fingers (2 for the index and middle finger and 1 for the thumb) and the scroll wheel with click function. This vertical mouse is also available in a wired version.