The patented hornit db140 horn is the loudest cycle horn on the market and puts the cyclist in control of their own safety itrsquos small sleek and enables cyclists to alert distracted drivers and pedestrians to their presence hornit db140 horn features 140 decibels alerts car bus lorry drivers amp pedestrians 2 sounds piercing and car horn sound remote trigger safe and easy to use when braking fits all bikes ip44 weather proof