Review on NAPASA Electric Bike Horn: 100-120 DB Waterproof 4 Sound Modes with Rechargeable Battery - Electronic Bicycle Bell for Safety and Convenience by Joshua Coulter

Need a LOUDDER horn for my road bike to protect against inattentive riders. This horn is advertised here as 120dB but my purchase showed a maximum of 100dB and this is just ONE noise (whistle). Other noises were around 95dB max Disappointed and keep looking. I'll add two stars for ability to hold a charge. I've had almost four to four months of normal use (don't need it for EVERY trip), which I think is good for a battery. , but I don't like how bulky this horn was and how it takes up a bottle cage. With today's technology one would imagine that a VERY LOUD electronic bicycle horn could be made.