Electronic Bicycle Power Horn with 4-LED Flashing and Mount (2*AAA/120dB)

Pros: Very useful. Good quality. The sound is quite loud. Some people are scared, some do not hear (pathological problems).

Cons: No cons. I use it 3 months and very happy . . .

Other: If you do not like the usual horn then boldly take this. His audible. Analogues have not seen. 2AAA batteries - enough for a long time. Rain is not terrible.

Pros: The build quality seems very good. Made of hard plastic. The trigger to the beeping sound seems a little flimsy though.

Cons: The trigger to the beeping sound seems a little flimsy. If you expect a sound like a fog horn or the like, you would be dissapointed. The "horn" sounds more like a telephone or a fire alarm. It makes a beeping sound with rapidly increasing and decreasing tone. The sound isn't very loud. I doubt the 120 dB as promised.

Other: Buy it instead of a traditionally bike bell, but dont expect it to be a loud horn.

Pros: -While its not really a horn sound it certainly is loud enough and makes it so that other drivers and people can hear you coming. - It has some lights on it as well so that at night when its darker it helps so that people can tell where you are. - The build quality seems to be very good.

Cons: - The "horn" isn't really a horn, its more of a higher pitch beep. It could be confusing to a motorist exactly what it is, although its still "horn" enough - The lights aren't much and really don't do a ton unless its a very dark area. Not super visible in the bight city at night. - The horn trigger is somewhat odd and rather poor.

Other: For the price this makes a great noise maker to alert people that your coming and that your there. Its certinly better then nothing, and the lights are a nice bonus. If you want a more serious super loud horn with a good light you should probably look elsewhere. For the price, its a great, cheep, bike noisemaker / horn.

Pros: It seems solidly built. Has forward facing LEDs that may aid visibility in rear view mirrors.

Cons: - Does not seem water resistant. - Not loud enough. In fact it is about as loud as a decent mechanical bicycle ringer. Perhaps the 120 dB is the theoretical maximum sound level 1mm from the emitter.

Other: Skip it if you are looking for a safety device. It makes a very good horn for warning pedestrians and other bike riders in quiet areas however.

Pros: Good build quality, does what is needed.
The sound is loud enough to make the pedestrians go out of your way.
I use it for an year and have no problems till now.

Cons: Too big when mounted on a bike. The sound it gives does not correspond to the size and the look.
The pitch tone is high and not very loud.
Lights are useless.

Other: Buy it but don't expect too much of it. It is not a serious horn as those working with pressured air.