Bicycle Cycling 6 LEDs 4 Loud Siren Sounds Trumpet Horn Light Bell for Bike Features‎:‎‎- Keep you from danger by warning or noticing others‎- 4 loud bicycle horns for safe riding‎- 6 red blue LED lights with bike sirens‎- A switch controls the flash modes giving the effect of flicker‎- Material‎:‎ High quality ABS plastic‎,‎ durable and wear resistant‎- Equipped with a mounting bracket‎,‎ easy to installation and detachment‎,‎ no tools required‎- Powered‎:‎ 2 x AA battery ‎(‎ not included ‎)‎‎- Suitable for handlebar diameter‎:‎ About 2.4cm / 0.94 inches Type‎:‎ Electric Horn Package weight‎:‎ 0.147 kgProduct Size‎(‎L x W x H‎)‎‎:‎ 11.00 x 5.00 x 6.00 cm / 4.33 x 1.97 x 2.36 inchesPackage Size‎(‎L x W x H‎)‎‎:‎ 11.00 x 5.50 x 8.00 cm / 4.33 x 2.17 x 3.15 inchesPackage Contents‎:‎ 1 x Bicycle Bell‎,‎ 1 x Bracket