ELECTRIC BIKE HORN - Come with wireless bicycle horn switch which clamps easily to 0.87~1.51 inch handlebar, it makes up to 113 decibel sound when press to let cars/pedestrians/drivers know you're comingVIBRATION ALARM - Anti-theft alarm triggered by vibration, can help to deter thieves effectively, provide additional security and give you peace of mind. Alarm and horn 2 in 1 feature functions, affordable and practical bike accessoriesSUPER LOUD & ADJUSTABLE SENSITIVITY - Up to 113 dB, 3 adjustable volume. 7 level adjustable sensitivity from gently touch to push or beat. IP55 waterproof, suitable for outdoor use66FT REMOTE CONTROL - Bike alarm controlled by wireless remote, strong wireless range up to 66ft. Vehicle search function, easy to find your vehicles in parking lot. 3 bike bell sounds for your choiceEASY TO INSTALL & USE - Easy to install same as bike accessories, package including batteries and everything you need. Suitable for bikes, electric bike, motorcycles, scooter, trailer, luggage etc