SUPER LOUD & ADJUSTABLE VOLUME: The newly upgraded three-dimensional displacement sensor and algorithm are used to accurately identify theft. Anti-theft bike alarm has up to 115dB loud vibration alarm, scare off potential thieves effectively and attract people's attention. The 3 adjustable volume from gently touch to push or beat, you can be easily set according to your needs.WIRELESS REMOTE CONTROL: Small size bike tailight-5.4*3.6*3.1cm + remote-5.8*3.5*1.5cm can be hidden in the bike/car seat and other places where thieves are not easy to find. Bike security alarm wireless control by remote, strong wireless 12V/27A range up to 50M/164FT(through walls), press the remote, the bell will ring, easy to find your vehicles in parking lot, 5 kinds of bells for your choice.SUPER BRIGHT BICYCLE TAIL LIGHT: Not only a hidden anti theft bike alarm but also a bike taillight. Bike taillights are equipped with 22 high-end COB LED lights beads, auto on off flashing light, up to 180lm LED light to provide excellent lighting, and bright enough to be seen from 150ft away in foggy/rainy day or even in dark night.4 LIGHT MODE OPTIONS & 3 LEVEL ADJUATABLE BRIGHTNESS: The taillight has 4 different modes and 3 levels of brightness easily selected by remote according to your needs and occasions to get the best lighting experience and protect you. Power button: red light flashingred light flashing quicklyred light flashing slowlyred light always on.SMART BIKE BRAKE LIGHT & AUTO ON/OFF: Auto bike brake light build in G sensor. Once you braked the rear light will auto highlight for 2s to alert other drivers behind you. On Slow Flashing and Breathing modes, tail light automatically turns off after 30 seconds of inactivity in dark environments, and turns on when motion is detected. In a bright environment, it will automatically turn off to save power.