Features:
Specially designed for the vocational rider or casual cyclist.
7pcs colorful LED.
Move-controlled LED sensor， automatically ON/OFF.
Only suit for American， British Air Nozzle adapter.
Simple to use，long lasting，and ensure your safety.
Easy to install，just simply screw on your tire valve stem.
Multi English letters and automatically change.
Auto-sensing switch control， lights up only when at night and on the move.

Specifications:
Auto change time: 4 seconds
Size: 15x99mm

Package includes:
1 x Bike Wheel Flash Lights