Bornd 1000/2000 DPI 2.4GHz Arc Optical Wireless Mouse, White (C160 WHITE) Buttons: 3 (left, right, scroll) Operation Range: 30-Feet, 360 degrees Resolutions: 1000 / 2000 DPI Operating Current: 5V DC 30mA Interface: USB 2.2 Compatibility: Windows 98/ 2000/ XP/ ME/ VISTA/ Win7/ Mac OS 2x AAA Alkaline Batteries (Not Included)