Anker 2.4G Wireless Vertical Ergonomic Optical Mouse, 800 / 1200 /1600 DPI, 5 Buttons for Laptop, Desktop, PC, Macbook – Black
Scientific ergonomic design encourages healthy neutral "handshake" wrist and arm positions for smoother movement and less overall strain.
800 / 1200 / 1600 DPI Resolution Optical Tracking Technology provides more sensitivity than standard optical mice for smooth and precise tracking on a wide range of surfaces.
Added next/previous buttons provide convenience when webpage browsing; the superior choice for internet surfers, gamers and people who work at length at the computer.