Wireless Mouse-The wireless mouse is 2.4G connection for easy operation. Please note that this mouse requires 2 * AAA batteries, which is NOT included in the package. 10m Wireless Transmission-Mini car mouse is stable and smooth transmission,it can be up to 10m wireless transmission,and it means you can work far away from your computer,it's more free than wired mouse. High Precision Optical Mouse -With 1600DPI high resolution, so high positioning accuracy, optical mouse can meet the daily office needs and gaming,ideal for entertainment. Wide Compatibility-Our mouse supports for windows XP / vista / Windows 7 / ME / 2000 / Mac OS, or later.plug and play-The bottom of the pink mouse is equipped with a receiver storage compartment to store the pouched USB receiver. Mini Size Mouse- The size of mini car mouse is approx10 * 5.5 * 3.5cm / 3.9 * 2.2 * 1.4in,you can catch mouse in one hands; Meanwhile,please allow slight error due to manual measurement. Thanks for your kind understanding.