Hornit dB140 Bike Horn, Upgraded V3 Model, World's Loudest Bicycle Horn for Increased Rider Safety, Remote Trigger and Upgraded Mounting System Included

Only loud in the direction it points. Feel so much safer on the streets on my bike. Anyone walking whiting a block will hear and cars from a really good distance. Batteries haven’t died in 2 weeks

I'm new to bicycle riding and didn't want those dumb "ding ding" bells. This horn...is scary! It was easy to install but I did have to put a spacer on the inside mount so there is no wiggle on my handlebar. I personally will use the lower decibel "car horn" as its quiter than the 140 decibel alarm/chirp. There is a mode switch on the back of the horn and you press the button to cycle sounds. Trigger was easy and its recommended you coil wrap it around the handle bar towards the top as seen in my pictures. I haven't used it on any pedestrian or car but its nice to have. Again, the 140 decibel mode is no joke. Be sure to face the horn up so the sound goes over the persons ears as mounting the horn upside down will deafen them. Price seems to be on point, too.Do NOT test this in your house or closed garage like I did...

After dealing with several inattentive and distracted drivers nearly hitting me on my bike even though I wear bright colored clothing and lights on my bike and helmet, I really wanted something that would get jarring attention. This horn does the trick. I love that it has two settings, one which is a very loud and piecing siren sound, great for traffic, and a lower key sound for paths and trails to get attention of pedestrians without scaring them.The horn mounted easily with no issues. I originally mounted on the left handlebar, but had some convenience issues reaching around my bell. It was no issue remounting on the right handlebar where the activation button could be mounted closer to my grip.I only have a few small gripes. I wish it had a USB-C rechargeable battery so I could easily keep it charged link my headlight and tail light. Talking to a friend who recommended it though, he noted the batteries do not need replacing that often, so it should not be too much of a problem. I also would prefer the activation button and sound change button were a little better integrated. The wires plug in at an awkward position and are not very clean looking. The activation button can be mounted close to a grip but changing the sound is on the back of the horn and not on the activation button which is a little awkward. It would be better to have to activation buttons with different shapes for tactile control. Lastly, I wish there was some mounting adjustment for the angle of the horn. I had to mount the horn on a swept back portion of my handlebar so it does not point straight out. It would be nice if there was an adjustment on the mount to account for that, but in all fairness, I don't think it affects the operation or sound of the horn.Overall it is a good loud horn and it will serve me well.

Very good quality and super loud.

I shopped around for WEEKS and I'm happy I bought this one.Cycling is my main source of commuting, whether for work, fun, or exercise. I live in midtown Manhattan and cycling here is a sport only for the brave or the idiotic. Bike horns (not bells) have saved my life multiple times. When my old horn fell apart (and so did its replacement...), I searched for a new one that met all my requirements.The only thing that worried me about this horn was the fact that it used standard alkaline batteries instead of being USB-rechargeable. I took a risk because it's very hard to find a product that is as loud as this one claims to be, without a bunch of extra nonsense. (I don't want a motion detector alarm! I don't want a remote control! I don't need an LED screen!) I've been using this for about a month and a half now, and have not had to replace the batteries. And trust me, I use this a LOT.I wish there were different noise settings. My old one had five different sounds you could cycle through (no pun intended). But this horn still gives you the option of a quick push (a little chirp) or a hold (piercing siren).The handlebar "remote" is very convenient and easy in an emergency traffic situation. The horn (which sounds more like a siren) is VERY loud. I don't know how to measure or estimate decibel levels, but I know this is loud as hell. This has truly saved me from some potentially horrendous accidents with drivers who do not pay attention to cyclists. I haven't really tested the waterproofness but the light exposure to rain has been fine.THIS IS THE ONE YOU WANT

I wanted a bike horn loud enough to get attention from cars if needed. I think this one would probably do it.It also has a softer sound for sidewalk use.It seems well made and so far I’ve not had to replace the battery. It has a handy slot for plugging the cable into when not in use to save the battery and also avoid accidentally setting the horn off when folding my bike.I have an “Lectric XP lite” folding bike and transport it inside my suv.

I LOVE this horn and I'm so relieved to have something loud enough that people (especially those in cars) can hear it in a noisy urban environment, especially when I'm going 20mph and they need to be warned at quite a distance. HOWEVER, I bought the first one in Oct. 2024, and it has already had a problem -- basically, the alarm sound went from a "woo-woo-woo" to a buzzer sound, like the clock at a basketball game, which is not nearly as attention-getting. I replaced the batteries, so that wasn't the issue. I like it enough that I bought another one, but for $33 it should last longer than 6 months!