Versatile bicycle alarm: With a loud 110 dB volume, the anti-theft bike alarm with vibration sensor protects your bike from potential thieves. Great gadget for securing your bike, e-bike, motorbike, scooter, trailer, fence, etc. Rechargeable and Remote Control: The bicycle security alarm is rechargeable with built-in 3.7V 700mAh lithium battery, working for 1-3 months. A quick tone will sound when the bike alarm is low energy. Matched with the remote control, it is convenient to arm, disarm or search the vehicle within 50m. Adjustable sensitivity and volume: This anti-theft bicycle alarm has 7 levels of sensitivity adjustable from touch to beat, which is suitable for various occasions. Meanwhile, 3 levels of alarm volume can be selected, which helps scare off thieves. IP65 dustproof and UV-proof PC material: With an IP65 waterproof and dustproof feature, it can work outdoors even in bad weather. The anti-theft bicycle alarm is made with anti-UV PC material. These features allow the alarm to operate in a variety of extreme conditions. Easy Installation: The sensitive anti-theft bicycle alarm is designed to be installed in 3 methods, including stuck with double-sided tape, tied with straps, and fixed with a bracket. Manual Language: English Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.