Unbranded Bicyclette Feu Arrière Led Bike Tail Light Pas De Batterie Auto-alimenté

Description:
Self-powered bike taillight, durable and easy-installed bike light that will always keep you visible and safe.
Battery-free bike rear light powered by magnetism, no need battery and no need charge. Easy to install and remove.
The faster the riding speed, the brighter the tail light and the higher the flashing frequency.
Electromagnetic technology supplies longer life time, IPX4 waterproof and tested for harsh weather conditions.
No need to worry about battery dead while you are cycling in the dark, rainy or fog weather.
Specification:
Material: Premium Plastic
Size: 55.5×35.5x28mm
Buckle Range: 16-22mm, fit for most mountain bikes
Feature: no battery, no need to charge, adjustable taillight angle
Weight: 80g
Package Includes:
1 Piece Bike Tail Light