EocuSun Electric Remote Control Mouse Remote Control Animal Toys Pet Cat Toys Mouse Black Brown Grey The mouse powered by 3 x 1.5V AAA Batteries (Battery Not Included) Controller powered by 2 x 1.5V AA Batteries (Battery Not Included). Size(L x W x T): 11.14 x 3.90 x 2.7 in /283 x 99 x 69mm Controller Size (L x W x T):4.25 x 2.17 x 1.18 in/ 108 x 55 x 30mm Package Includes: 1 x RC Mouse ,1x Remote Controller