Wireless Anti-Theft Alarm: This anti-theft bike alarm features a built-in motion sensor and vibration detection. If someone touches or moves your bicycle, it emits a loud 110dB alarm to attract attention and deter theft. The alarm includes a vehicle locator function with up to 70 meters remote control range, helping you easily locate your bike in crowded parking areas. 7-Level Adjustable Sensitivity: The bicycle alarm offers 7 sensitivity levels, adjustable from light touch to strong impact, making it suitable for various environments. It detects vibrations, movement, and tilting to trigger alarms. Ideal for bicycles, electric bikes, motorcycles, and other vehicles. Default setting is high sensitivity. Can also be used on doors or windows. IP65 Waterproof & USB Rechargeable: Built-in 3.7V 700mAh rechargeable lithium battery with 4th generation power-saving technology provides up to one month of operation on a full charge (depending on usage). Constructed with high-quality PC and anti-UV materials, rated IP65 for protection against water, dust, and snow, ensuring durability in harsh weather conditions. 5 Light Modes: The bright rear light enhances visibility during day and night riding. Automatically flashes for 2 seconds when braking to alert nearby riders. Features 5 lighting modes: Slow Flashing, Breathing, Fast Blinking, Steady Light, and OFF, all easily controlled via wireless remote. Easy Installation: Includes mounting bracket and cable ties for flexible installation. Bracket fits standard tube frames; cable ties allow secure mounting on irregular shapes. Combines brake light functionality with security alarm to protect your bike from theft and improve riding safety. Compatible with bicycles, mountain bikes, motorcycles, skateboards, and electric tricycles. What You Get: 1 x Bike Alarm with Tail Light