Electric Bike Horn 80-130db Adjustable Volume Bike Alarm for Adult Bicycle Bell with Long Battery LifeIPX6 Waterprooffor Mountain Bike/Road Bike/Electric Scooter

[【Horn Function】Press button 2 to ring the hornthree levels of volume adjustment(80-130db)button 1 to increase the volumeand button 3 to decrease the volume. 【Anti-theft alarm】Press and hold button 3 for 3 secondsthe horn will sound and enter the pre-armed state;wait for 10 secondsthe horn will sound again and enter the anti-theft monitoring state.If the vehicle is shaken or vibratedthe horn will continue to sound for 10 seconds. 【USB rechargeable and long standby time】Comes with a charging cable you can use the usb port to charge the horn the full charge time is about 1.2 hours the battery capacity is 250 mAh available for 20-30 days. 【IPX6 Waterproof 】Can be used in rainy days suitable for bicycleroad bikes mountain bikeselectric scooter. 【Easy to Install & Remove】Easy to install and remove put the silicone strap fixed on the handle.suit for 0.86"-1.25"(22.2-31.8 mm )diameter bicycle handlebar]