Firekingdom Fashionable 2.4G Cool Sports Car Shape Wireless Optical Mouse Mice for PC Computer Desktops Laptop,Palevioletred Mouse type: Wireless Optical Mouse 16 automatically switch the work of up to 60.000 channels USB interface is plug-and-play Mouse built-in memory, the replacement of the batteries Package Includes: 1 x 2.4G Palevioletred Car Wireless Mouse, 1 x Mini Receiver(built inside)