2.4G Wireless Vertical Ergonomic Optical Mouse with 5 Buttons

Scientific ergonomic design encourages healthy neutral “handshake” wrist and arm positions for smoother movement and less overall strain. Added next / previous buttons provide convenience when webpage browsing; the best choice for internet surfers, gamers and people who work at the computer. Easy to use buttons: All buttons are easily operable without contorting your fingers. The button force is light for easy clicking, but still firm enough to avoid accidental actuation. Type: Mouse Mouse Type: 3D Mouse Connect Type: 2.4GHz Wireless Key Number: 5 Roller Number: 1 Wireless Distance: 10m Location Technique: Optical Interface Type: USB2.0 Other Function: Ergonomic Design Working Voltage: 5V System: Mac OS, Windows Ergonomics: Support Size: 98 x 97 x 86 mm / 3.86 x 3.82 x 3.39 inch Net Weight: 91 g / 3.21 oz