Mini Coke Can Speed RC Radio Remote Controlled Micro Racing Car Toys Kids Game Car size: 1.35 x 0.75 x 3.15" / 3.5 x 2 x 8cm Can size: Diameter 2.5" / 6.5cm Height 4.75" / 12cm Power (Car): Built-in rechargeable battery (included) Power (Controller): AA battery x 2 (not included) Color: Yellow 27MHZ. The same frequency of cars will interfere with each other.