<ul><li>Design with small size and modern fashion look.built in boost circuit with loud sound reached 140 db</li><li>With rechargeable 280 mAh lithium battery, used more convenience .USB cable charge 1.2 hours full charge.</li><li>Contains USB cable, 1.2 hours full charge.one charge have 2000 times ring bell can work about 20-30 days</li><li>Have 4 sound modes, whistle sounds,hour sounds,alarm sounds dust resist,IP 65 waterproof level</li><li>Easy to install:put the silicone strap fixed on the handle.suit for 0.86"-1.25"(22.2-31.8 mm ) diameter bicycle handlebar</li></ul><br><br>

LESOVI Electric Bike Horn Bicycle Bell 140DB Loud Cycling Horn for Adults and Child 4 Sound Modes +Vibration Alarm Rechargeable Waterproof Smart Bike Horn for Mountain Bike, Road Bike, Scooters