UMEI Ergonomic mouse High Precision Optical Vertical Adjustable DPI 800/1200/1600 Wireless （Excluding batteries）

UMEI ENCOURAGE YOUR OFFICE ENDURANCE - For those who spend most days in front of a computer, this mouse is meant for you. The umei Vertical Mouse's ergonomic design promotes healthy natural hand positioning and the ultimate comfort without the need to twist your arm in an unnatural way (leading to long-term pain). From this new comfortably positioning, you can work for more hours - and be more successful at your job. REDUCE TENSION AND ALLEVIATE PAIN - Our mouse, which is built for right-handed users, reduces muscle strain and can even undo the damage that years of using a traditional computer mouse causes. Wrist pain, shoulder fatigue, Carpal Tunnel Syndrome and Tendonitis can all be alleviated or, in many cases, eliminated with regular use. Enters power saving mode (power is cut off completely) there is an on / off button at the bottom of the mouse. When you don't use the mouse, please press the button to off. This will save a lot of power and make the battery more durable..Compatibility:Our Wireless Vertical Ergonomic Optical Mouse for Windows 10 / 8 / 7 / @@@cSQm7EZKsP39A5x37X3dKWFq/R+9eyHX@@@ / XP,for Linux And For Mac OS X (The two thumb buttons are not recognized on the for Mac OS X.) ADJUSTABLE DPI SETTINGS - The adjustable DPI (dots per inch) settings allow you to change the sensitivity of the mouse's pointer speed ( DPI 800/1200/1600), allowing you to decrease speed for tasks that require guaranteed precision (like color correction or photo editing) or increase the speed faster for browsing. 100% Satisfaction Guarantee --- If you are not 100% satisfied with the quality of our product please let us know about the issue by the email. We will assist you in time and if there is a problem with our product, we will give you a reissue or refund to until you are satisfied with our products.