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 best choice for internet surfers, gamers and people who work at length at the computer.
Enters power saving mode (power is cut off completely) after 8 minutes idle, press right or left button for it to wake. Product dimensions: 101 x 82 x 80 mm; product weight: 3.4 oz