Increase your ergonomics with the V7 Vertical Trackball Wireless Mouse. The MW650 is designed for ergonomics and is positioned at a more natural arm angle than traditional mice - at a comfortable 35° angle. It includes a removable magnetic base that offers an extra 10° boost for adjustable comfort. Fly through spreadsheets and emails with the adjustable DPI, and zip through websites with a forward and back button at the tip of your fingers.