LOUD ALARM ADJUSTABLE VOLUME: Up to 113dB LOUD alarm, scare off potential thieves effectively. Well-made alarm with great performance. 3 lever adjustable volume, dont worry about the alarm is extremely loud or not loud. ADJUSTABLE SENSITIVITY WATERPROOF:10~25 meters open place can to 100 meters . 7 level adjustable sensitivity from gently touch to push or beat.You can keep your car from being stolen in a farther control range, and the sirens can also help you quickly detect. MULTI-PURPOSE ALARM:Act as a great bike theft deterrent. Vibrationaly triggered alarm suitable for bicycle, motorcycle, electric bike, electric scooter and so on. You can also use for doors and windows alarm vibration sensors. AMAZING SOS FUNCTION:When you are in distress in the suburbs, or fall down accidentally while riding, you can turn on the SOS function to automatically sound the prompt for help, giving you an extra security guarantee. EASY TO INSTALL USE: Two install methods, tie your bike by the strap through the holes or paste the back of the alarm with double-sided sticker to your bike. With Remote Control, it's convenient to arm, diarm alarm, One-key find vehicle.