BEBONCOOL(TM) 2.4G Wireless Vertical Ergonomic Optical Mouse 1200 DPI with 5 Buttons Scientific ergonomic design, much comfortable and flexible to operate Operating distance: 32.8 foot (10m), USB connection, plug and play Rechargeable battery, auto-sleep feature conserves power and extends battery life Left/right mouse buttons; Pointer-finger scroll wheel; Next/previous buttons: Much convenient for you to browse webpage, surf online, play game and work at the computer for a long time with the added next/previous buttons Compatible with Windows 2000, Windows XP, Windows vista, Windows CE, Windows7, Linux, Android