1. The outer shell is made of ABS plastic, which is very durable and reliable.
2. A Loud bell to draw people’s attention on the street. Keep your kid from danger by warning or noticing others.
3. Very easy to install on your bike.
4. 4 button controls: four buttons control 4 kinds of sound.
5. Can be used for a wide range of activities: road biking, city commuting, hybrid bikes, kids bikes etc.
Material: ABS Plastics + Electronic components
Colour: as shown in the pictures
Package Weight: approx. 140g
Battery: 2 x AA battery (not included)
Application: Suitable for Within 24mm diameter tube bicycles
Need to unload the two screws of the base to open the lid to install batteries.