Review on Onvian 2 in 1 Smart Bike Tail Light: Ultra Bright 115db Anti-Theft Motorcycle Bike Alarm with Remote, Waterproof Bicycle Security Cycling Alarm Vibration Sensor by Enrique Espinoza

I bought this for my husband who has a very expensive e-assist mountain bike. It's basically a car. He drives it to work every day and was always afraid to leave it locked because it might be stolen. When he arrived he was so skeptical. UNTIL he tested it (in our room) and oh my god that thing is loud! He immediately installed it on his bike and it will definitely deter a thief. It also has intelligent recognition when it knows it's blinking while driving, and as you slow down the blinking will slow down and eventually just turn red to indicate you're stopping. Super helpful!