Bike Horn Electronic Bicycle Horn USB Rechargeable Handlebar Cycling Alarm Alert Ring for Mountain Bike/Road Bike/BMX/MTB

The electric bike horn have fully sealed design without fear of storm, they are perfect for outdoor using, you can share them with your family and friends., This electric bike horn is build in voltage boosting circuit, ringing sound up to 130DB,loud enough to warn people you are coming,keep both safe in crowded., Built-in 280mAh lithium battery, equipped with USB charging port,1.5 hours fully charged can use for 20-30days,ringing 1000-1500 times and standby for 180 days., Red light means it is charging and the green light means that power is full. Please remember close watertight cover after charging. Waterproof,drop resistant and dustproof,IP 65 waterproof level., Switch through the three sound modes with one click: whistle sounds, trumpet sound and siren sound.Imitating physical sound, progressive loud sound, clear enough, not harsh, and wider range of directional launch.