" Quality materials: The case is made of quality silicone, soft and comfortable, will not scratch the handlebar, can be stretched and not removed Formed: Waterproof and dustproof design can extend the service life Large decibel buzzer: The sound is loud enough to remind someone that a bike is coming and can be used for daily commuting ; Provide 3 different ringtones, long press for 3-5 seconds to switch Easy to install: easy to attach and disassemble, no tools required, the silicone sleeve has high elasticity, can be installed vertically or horizontally, can be adjusted to different diameters, suitable for most bicycle handlebars, such as road bikes, mountain bikes, children's bikes. bicycles, city bikes or other types Small and portable: The bicycle bell is very small and can be directly stored in the pocket when not applicable, which does not take up of space and is light. Package: There are 2 electronic doorbells in the package, blue and black, with a stylish and simple appearance, and you can give them as a gift to a friend who likes cycling lo "