Elsees 2.4GHz 1200DPI/1800DPI Car Shape Wireless Optical Mouse Gaming Mouse with USB Receiver for PC Laptop,Silver Wireless mouse connects to your computer via USB receiver (stored in the battery compartment). 2.4GHz digital wireless transmission to provide furthest reach 10 meters from the operation. Interface: USB 2.0. Resolution: 1200DPI/1800DPI Power Supply: 2 x AAA Battery (not included).