Optical Vertical Mouse Ergonomic Wireless Mouse

Do you feel painful especially for your neck, shoulders or wrist when you need to use the mice for a long time without a comfortable angle?  Are you worried about the strain and fatigue of your wrist joint? This vertical optical mouse is ergonomically designed to alleviate strain on wrists with cozy comfortable pinky finger & thumb rest and a full contour shape seamless palm supporting, healthy and efficient.   Features: Ergonomic Design Elegant contoured shape seamlessly supports your palm, featuring more flexible and smoother movement, alleviating wrist tension and eliminating wrist joint's fatigue. Cozy comfortable and healthy.   Rapid Responsiveness Optical tracking tech. allows higher sensitivity for extra-precise tracking. One button switchable between DPI levels 800, 1200, 1600 to adjust cursor speed to suit various usage scenario.   Upgraded Functionality Previous and next page buttons for hi-speed web, files browsing and work flow, perfect for gaming enthu