Features1Outer shell is made of ABS plastic, which is very durable and reliable 2A Loud bell to draw people's attention on street. Keep your kid from danger by warning or noticing others 3Very easy to install on your bike 44 button controls: four buttons control 4 kinds of sound 5Can be used for a wide range of activities: road biking, city commuting, hybrid bikes, kids bikes etcSpecificationDescription:Our product is practical, reliable, and durable. gifts for your kids.Powered by 2 AA batteries (not Include).A Loud bell to draw people's attention on street. Keep your kid from danger by warning or noticing others.Very useful accessory for your bike. You are worth it.Features:1. Outer shell is made of ABS plastic, which is very durable and reliable.2.A Loud bell to draw people's attention on 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.Specifications:Material:ABS Plastics + Electronic componentsColor: as shown in the picturesPackage Weight: approx. 113gBattery: 2 x AA battery (not included)Application:Suitable for 28-30mm diameter tube bicyclesNeed to unload the two screws of the base to open the lid to install batteries.Package Included:1 xBike front light with bell1 x Mounting bracketNote:1. Please allow 1-3cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please in kind prevail.3.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.Package List