BIKE ALARM: Equipped with a 3D displacement sensor inside, easily identify any movement; through optimized special algorithms, can accurately identify theft and reduce false alarms. IP54 waterproof design, perfect for use as a burglar alarm for bicycles,scooters, motorcycles and even home windows and doors.ADJUSTABLE SENSITIVITY amp; VOLUME: This bike security alarm provides 7 levels of sensitivity settings, from slight movement to strong push, which can be adjusted according to the environmental needs. Meanwhile, the volume is also divided into threelevels of 90dB, 100dB and 110dB with 3 different ringtones for your choice.UPGRADED NYLON BRACKET: The bracket of the bicycle alarm uses upgraded material. Replacing the plastic with nylon makes the sturdiness increase dramatically. The nylon material is very effective in resisting breakage and weathering, which greatly extendsthe service life. And there are also silicone backing plates to prevent the paint on the part of the bracket in contact with the bike from being scratched off.TYPE C CHARGING amp; ULTRA LONG RANGE: This bike anti theft alarm adopts USB Type C charging interface and built in 4.2V 700mAh lithium battery, which can be used up to 1 3 months for daily use. Equipped with a control . The remote control distance isup to 30 50 meters in open areas, one key arm/disarm function, easy to locate your vehicle.FLEXIBLE INSTALLATION METHODS: Our bike alarm has 3 different installation methods, which are bracket, strap and double sided tape. To meet the installation needs of different environments, for example: bracket is specially designed for mounting cylindricalobjects, for non cylindrical objects choose strap mounting, and smooth surfaces can choose double sided tape sticking. (All installation tools are included in the package, no need to prepare by yourself)