Novelty Design: Wireless mouse with sports car shape design, size of the car mouse is 4.05 * 2.17 * 1.38 inch, it is very cool and easy to carry, a perfect gift for kids or friends Easy to Use: Powered by 2 * AAA batteries (not included). Wireless mouse connects to your computer via USB receiver (stored in the battery compartment), just slide back the cover, you will see it