3 in 1 Bicycle Wireless Rear Light Cycling Remote Control Alarm Lock Fixed Position Mountain Bike Smart Bell COB Tailight USB Charging

The best bicycle alarm I've tested/used. The only thing i have a problem with is my job has a strong signal that runs on the same frequency as the key-fob.. so the device is not responsive in the parking lot of my job.. I've had the problem at other locations too, but if it works to activate, it will work to deactivate it... (so you will never be riding down the road with an alarm that wont turn off)

It malfunctioned within a week, so I returned it. Then the replacement malfunctioned after 4 months. I will wait for a namebrand to make one before I buy another.

I bought this to put on my cheap motorized bicycle and I loved it as soon as I took it out of the box and charged it. SUPER loud and incredibly responsive, it was exactly what I was looking for. It was on the bike for about 5 miles when I go to show it off to a buddy, and all of a sudden there's no sound! That was really disappointing but not surprising as these bikes tend to vibrate everything off of them. I'm going to try taking it apart and hope it's just a broken solder.Before no sound 6/5Broken 4/5 as the lights still function great and the mount doesn't get better

Alarm goes off randomly. No movement or vibration in its vacinity

instructions to small to read its in small print its missing parts,not the important parts, yet its a good productas as,long it works thats the,main thing some tried to steal my bikes would i get this product again yes,i would the alarm is perfect for what i need very sensitive

You should have this on ALL your bikes!I have it on my fully loaded touring bike and it does an excellent job on it. Battery life is amazing. It holds its current power if it doesn't go off, that's good.

It does the job as advertised although buzzer function is not easy to use due to its design on the remote unit. Other than that, its worth to own one for the price.

Poor quality, key phob fell apart. Alarm mount junk.