Multi Functional Bike Tail Light: The bike alarm tail light is a multifunctional device that combines turn signals, brake lights, warning lamp, electric bell, and anti theft alarm. It provides comprehensive alerts to pedestrians and vehicles, ensuring the safety of both the bike and the rider. Ultra Bright Turn Signals: The tail light features 31 COBLEDs that provide a brightness of up to 160LM, making you highly visible during night rides. The wireless remote control activates the left and right turn signals, attracting the attention of drivers several blocks away. It offers 6 adjustable lighting modes, slow flash, breathing, fast flash, steady, emergency light, off, adapting to different environments. 110db Alarm Volume: The bike alarm tail light can be installed on the rear bike rack when parking the bike on the street or in a yard. It produces a 110dB alarm when someone touches the bike, safer than other locks, ensuring constant protection for the vehicle. High Sensitivity: Equipped with 3 electric bells that produce different tones (electric vehicle sound, horn, bird chirping), the tail light alarm also offers 7 levels of sensitivity adjustment, from light taps to stronger hits. The sensitivity can be lowered if it is too high, preventing false triggers. USB Rechargeable and IP65 Waterproof: The built in 2000mAh rechargeable battery allows the tail light alarm to work for more than 70 hours after a 7 hour full charge. The upgraded wireless remote control uses replaceable button batteries and has a wireless range of up to 70m229ft. With enhanced waterproofing (IP65 rating), it can withstand heavy rain and snowstorms. Easy Installation on Rear Bike Rack: The tail light is designed for quick installation on the rear rack of bikes, electric bikes, and other small vehicles using screws and bolts, with a bolt spacing of 35?85mm. Made of PC + ABS material, it is perfect for long distance biking in the wilderness or suburbs.