The Macally BTEZMOUSEBAT is a rechargeable Bluetooth wireless optical mouse with a 800/1200/1600 DPI switch button, two soft-click buttons and scroll wheel/button for a precise and smooth control. The ergonomic and ambidextrous design offers maximum comfort to both left-handed and right-handed users and helps to increase productivity. The 400mAh built-in rechargeable battery will power the BTEZMOUSEBAT for up to 2-3 months before next charging is required. No need to buy and replace batteries anymore! The BTEZMOUSEBAT works both with Mac and PC and doesn't require a driver.