Features:
100% Brand new and high quality!
Automatic sensor turns lamp on when wheel is in motion.
Specially designed for the vocational rider or casual cyclist.
When you stop they will switch off to save battery power.
Simple to use，long lasting，and ensure your safety.
Increases nighttime and bad weather visibility for enhanced safely.
Installs on standard tyre air stem valve of cars，motorcycles or bicycles.

Specifications:
Material: metal， bright chrome plating
Color: Transparent gray and white
Gas mouth: UK mouth / US mouth
Battery: 3*AG10 button battery (not incloud)

Package included:
1 x Bicycle Tire Gas Nozzle Valve Core Lamp Valve Monochrome Colorful Lights