INVESCH Cycling Horns120dB Loud Bike Horn Loud 6 Modes 2 leds Bike Bicycle Handlebar Ring Bell Cycle Horn Compatible with all bikes including road bikes Electron Loud Alarm: 6 kinds of sound effects,good performance of 120 dB sound,loud enough to attract attention and warn the walkers New design with extra 2 leds alarm: When the horn sounded, 2 LEDs lamp will flash light, so that the effect is more significant warning Worked with 2 AAA batteries (Battery included) Waterproof rating is IP65