113db Security Alarm: Once triggered, a very loud voice will be a great deterrent. Not only designed for bicycles, motorcycles, also can work with e-bike, scooter, door and window. Waterproof Bike Alarm: PC material shell, IP55 waterproof level, suitable for outdoor use. Easy to Install: Two kinds of installation tools, double-sided sticker and straps, the alarm can be mounted on the bicycle, motorcycle, car or other devices stably and steadily.