BEBONCOOL 2.4G Wireless Vertical Ergonomic Optical Mouse 800DPI 1200DPI 1600 DPI with 6 Buttons Scientific ergonomic design (Take you days to get adjusted to this angle), for right-hander much comfortable and flexible to operate; Adjustable 800DPI, 1200DPI, 1600DPI Operating distance: 32.8 foot, USB connection, plug and play; Product dimensions: 3.9x 2.8 x3.1inch; product weight: 118g Rechargeable 400mAh battery, auto-sleep feature conserves power and extends battery life Left/right mouse buttons, middle scroll-wheel, DPI button, forward & backward buttons (very useful for Internet navigation); on-off switch on the bottom Compatible with Windows 2000, Windows XP, Windows vista, Windows CE, Windows7, Linux, Android, MAC OS