Mini Bike Alarm: 46mm x 46mm compact mini anti-theft device. Made of PC and UV resistant material, it is waterproof and dustproof (IP54), resistant to high and low temperatures, and can be used outdoors without fear of wind and rain. Easy to install wireless bike alarm: brackets, cable ties and double-sided tape. Three wireless installation methods are available, suitable for bicycles, motorcycles, scooters, tricycles, cars and other models. Robust remote control bike alarm: built-in lithium battery, USB-C charging function and low battery reminder, eliminating the hassle of changing the battery. 4G energy saving technology extends the battery life of the remote control. Ultra-loud multi-function bike lock: automotive-grade 6-segment alarm, 110dB volume, effectively deters thieves and effectively protects against theft. There are three types of electronic bells: remote control, button activation and simple vehicle tracking! 【Ultra sensitive bicycle lock】A three-dimensional distance