Anker Ergonomic Optical USB Wired Vertical Mouse 1000/1600 DPI, 5 Buttons, High Performance Ergonomic Optical USB Wired Vertical Mouse 1000/1600 DPI, 5 Buttons Ergonomic mice, Next/previous buttons

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1.Scientific ergonomic design encourages healthy neutral "handshake" wrist and arm positions for smoother movement and less overall strain.
2.1000/1600 DPI Resolution Optical Tracking Technology provides more sensitivity than standard optical mice for smooth and precise tracking on a wide range of surfaces.
3.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.
4. 1.5m/4.9ft USB cable length, product dimensions: 120*62.8*74.8 mm; product weight: 5.3 oz.
5.Package includes: 1 Anker Vertical Ergonomic Optical Mouse (with 4.9 ft cable), 1 instruction manual.
Comfortable and classy.
Tired of using the traditional grip? Take a break from overly-clunky or uncomfortably tiny mice. The ergonomically-designed thumb rests and grips fit the contour of your palm for maximum comfort.
Sleek and Sexy.
Turn heads with a futuristic design. Made for increased functionality and comfort, this mouse combines a handshake grip with a easy-access buttons and two levels of mouse sensitivity for improved tracking.
Easy-access use.
Five buttons give you improved control over your computer's systems. Whether dragging and dropping, selecting large volumes of data, or casually gaming, this mouse provides a low-cost, effective solution for multiple computing needs.
Compatibility:
Windows 8 / 7 / Vista / XP / 2000
Linux
Mac OS X (The previous/next page thumb buttons are not recognized on the Mac OS X.)
?????? 1.Scientific ergonomic design encourages healthy neutral "handshake" wrist and arm positions for smoother movement and less overall strain. 2.1000/1600 DPI Resolution Optical Tracking Technology provides more sensitivity than standard optical mice for smooth and precise tracking on a wide range of surfaces. 3.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. --4. 1.5m/4.9ft USB cable length, product dimensions: 120*62.8*74.8 mm; product weight: 5.3 oz. --5.Package includes: 1 Anker Vertical Ergonomic Optical Mouse (with 4.9 ft cable), 1 instruction manual. Includes 18 month warranty and lifetime technical support guarantee.