Pexkids fire truck Perry horn Super fun horn for your child's bike. The horn has four alternating blue LED lights and six different actions with siren. Hold the on/off button for 4 seconds to start or turn off the car. Specifications: Color: white Gender: junior Material: plastic Flashing light: 4 alternating blue LEDs Sound: 6 different actions with siren Power supply: batteries (2x AA) Batteries included: yes Mounting: clamp for on the handlebars (diameter 22.2 mm)