125dB Electric Loud Bike Bell with Anti Theft Alarm Function, Bike Horn Electric Loud with 4 Sound Modes for Adults, Rechargeable Bicycle Bell Waterproof Bicycle Horn for Bike Cycling(Blue)Loud Electric Bike Horn with Unique Anti Theft Alarm Function Small bike bell with loud 4 sound modes reached 100-125 dB. Fit for the noisy urban environment. Th..