Electric Bike Horn Bicycle Bell 140db Loud Cycling Horn For Adults

Weight 25g Volume 60cm * 34cm LESOVI Bike Horn Alarm Small volume big function, only 30G heavy, is not only the horn, is also the alarm. Tool-free installation, the use of straps fixed, more convenient and quick installation and removal. Key usage: Left Key: Lock, long press the left key to enter the lock state, sensing shake automatic alarm. Right Key: unlock, want to unlock only long press the right key to unlock. Design with small size and modern fashion look. built in boost circuit with loud sound reached 140 db one charge have 2000 times ring bell can work about 20-30 days Have 4 sound modes, whistle sounds,hour sounds,alarm sounds dust resist,IP 65 waterproof level