Bike Bicycle 4-Tone Police Light and Electric Horn Siren Convenient and easy to install * Keep your kid from danger by warning or noticing others Lightweight and impact resistant * 120db Loud electronic signal penetrates traffic noise A switch to control the flash modes give the effect of flicker * 6 LED light in blue and red with 4 tones Power: 2 x AA Batteries (Not included) * Size: 13 x 6 x 2.5 cm Color: As shown in the pictures