Description:Our product is practical, reliable, and durable. Perfect 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 bicycles Need to unload the two screws of the base to open the lid to install batteries.Package Included:1 x Bike front light with bell1 x Mounting bracket Note: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..