NIB Medion Wireless Vertical Mouse Plug and Play Gaming Laptop PC Battery included Ergonomic design provides maximum comfort of wrist & thumb...I am currently using on e of these & I can vouch for the comfort & relief of pressure on my wrist...THIS IS SO GOOD! Advanced Optical Sensor tech 5 buttons and scroll wheel Select DPI 800/1200/1600 Wireless 2.4GHz up to 33 feet/10 meters Low power mode and on /off switch Supports all current Windows versions, Mac* Linux* Available USB type A port Medion Wireless Vertical Mouse Plug and Play Gaming Ergonomic design maximum comfort WFH office work PC laptop mac linux selectable DPI