113dB Security Alarm: Once triggered, a very loud sound will be a considerable deterrent. Not only designed for bicycles and motorcycles, but can also be used with e-bikes, scooters, doors, and windows. Waterproof Bicycle Alarm: PC material casing, IP55 waterproof rating, suitable for outdoor use. Easy to Install: Two types of installation tools, double-sided adhesive tape, and straps are included; the alarm can be mounted securely and stably on bicycles, motorcycles, cars, or other devices.