Bicycle Parts Rockbye Smart Bicycle Burglar Taillight Alarm IPX5 Waterproof Cycling Auto Sensor Brake Lamp with Remote USB Charge Rear Light Specifications: Applicable models: Anti-theft alarm for electric bike, motorcycles, bicycles, scooters and automatic safety warning lights for night riding Light color: red light Light mode: 4 modes (automatic fast strobe breathing, manual pop-up strobe stable) Alarm: 105-115 decibels, 5 kinds of horn sound, 3 levels of volume adjustable Battery: 800mAH, running time of about 8-30 hours Charging plug: USB C charger Controller battery: 12V/27A battery (included), replaceable, non-rechargeable Waterproof protection: IPX5, splash-proof Remote control distance: 10-80M, automatic alarm sound to find the parking position of the vehicle Warm tips for using: Please fully charge the tail light before using. 2 in 1 Smart Bike Tail Light Bike Alarm - This is a multi-functional bike tail light anti-theft device that combines a brake light and a bike alarm. It not only can be used as a bike light for night riding, but also can be set as a more convenient and faster anti-theft system than steel lock when you leave your bike With wireless controller - The remote control has a wireless range of up to 164FT/50M outdoors. the remote control has 4 control buttons, you can not only activate and deactivate the bike alarm, but also turn on the flashing light (4 light modes), and if you want to find the car quickly to hear a location, you can make the alarm sound 3 levels of adjustable sensitivity- According to the needs of different riding occasions, this tail light is designed with 3 adjustable sensitivity levels, from light touch to push or tap, when your bike needs high security at night, the rider can set the sensitivity to the highest level. 3 levels of brightness adjustment- The brightness of the light can be adjusted in high, medium and low brightness, the rider can adjust the brightness according to the environment. Intelligent light sensing and auto on/off- In high brightness, the flash and breathing modes will automatically go to sleep in order to save energy. In low brightness, the flash and breathing light will automatically turn off if it is stationary for 30 seconds and will turn on again when the tail light detects vibration or movement Four light modes- Flash, breathe, strobe and steady on mode. In case of emergency braking, the brake light will automatically come on to ensure safety at night. Rechargeable bike light and IPX5 waterproof- The bike tail light with alarm has a built-in lithium battery that can be fully charged in 3 hours by connecting to a USB C port. The rear bike light is made of square carbon brazed dimensional housing, which is waterproof/dustproof and shockproof for extreme outdoor weather Loud bike alarm- The rear bike light has a built-in e-bike horn with a maximum volume of 115 decibels. If someone touches or moves your bike, the alarm will emit a warning sound loud enough to scare away any thieves