Points:1、【Loud and Clear Sound】Our bike bell volume can reach about 90 decibels, and the sound is and loud. Its sound is like the chirping of an insect and bird (there is onlysound), enough to alert pedestrians.2、【Rotary Base Design】The base of this bike bell can be rotated 360 degrees to suit handlebars of different diameters. And it is detachable, which is very convenient.3、【able Style】Our bike bell is scientifically designed to protect against rain. At the same time, it is small in size and can be hided on the handlebar, without affecting the operation of the handlebar, braking, and shifting.4、【Easy to Install】Our bike bell is easy to install. First, remove the screw with a screwdriver (not included), install it on the handlebar, and then tighten the screw.5、【Multiple Applications】This portable bike bell is suitable for road bikes, mountain bikes, city bikes, kids bikes, folding bikes, sportbikes, and more.Features:1. With a loud siren, up to 90 decibels.2. 360 rotation of the bracket.3. Suitable for handlebar diameter of about 24-28mm.4. Easy to be fixed on the bicycle.Specification:Power supply mode: 3A*2 (not included)Application: Suitable for seat posts within 24-28mm diameterProduct list:1* Bike BellNotes:Due to the lighting effects and shooting angles, there is a color difference in the product, please understand.Due to manual measurement, there is a tolerance in the product size.