Loud Electric Bike BellThe loud electric bike bell has a sound of 100-125dB and weighs only 36 grams. Your horn can be heard even from far away for safer use. It is suitable for road bikes, mountain bikes, kids bikes, city bikes or other types. The perfect bike accessory for adults and kids. Excellent Anti-Theft Alarm FunctionThe loud electric horn has 4 sound modes: whistle, horn, siren and steam horn. You can choose it according to different situations, one key switch, and it has anti-theft function. If someone touches or pushes the bike, the horn sounds a quick and continuous loud alarm. Fully Protected Durable HornThe durable bike horn is made of high quality plastic silicone material. Sealed, dustproof, high-strength shockproof, ipx5 waterproof level. Not afraid to travel in any weather conditions for your outdoor riding needs. This electric bell will be your good partner. Rechargeable Bicycle BellThe scooter horn is equipped with a USB charging port and built-in 200mAh lithium battery, which can be used for 20-30 days with a full charge of 1.5 hours. Easily fit and secure with the stretchable shoulder straps. It is easy to carry and adaptable to different bike models. Bicycle handlebar diameter range: 22.2-31.8 mm.