Mini Bike Alarm System: 46mm x 46mm mini anti-theft device that does not take up space. PC + anti-UV , IP54 waterproof and dustproof, high and low temperature resistance, can be used outdoors without fear of wind and rain. Easy-to-install wireless alarm system: brackets, , and double-sided tape are three wiring-free installation methods for bicycles, motorcycles, , tricycles, , and more. Ultra-durable remote control bicycle alarm system: the has a built-in lithium battery, USB-C charging + low battery reminder, eliminating the of battery replacement. The fourth edition of energy-saving technology, the remote control battery is more durable. Super loud multi-function anti-theft bicycle: car-grade 6-segment alarm sound, 110 decibels loud volume, effectively deter thieves, and efficient anti-theft. Three kinds of are adjustable, remote control, one-button arming, easy to find a car Ultra- bike tracker anti-theft: 3D displacement sensors and algorithms can accurately identify theft and reduce alarms. With 7-level sensitivity , the alarm goes off immediately when someone touches the body, moves, presses or taps. Anti-theft bicycles are also suitable for occasions such as doors and windows. Colour:black :plastic Package Contents: 1 x Bicycle Alarm 1 x Remote Control Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.