✔HIGH REFLECTIVITY: When the ray emitter is illuminated by the headlights, it will light up.In this way, even in the dark, the cyclist can be identified earlier and accidents can be avoided.✔ENVIRONMENTAL PROTECTION: No batteries are needed.The bicycle reflector is designed and manufactured according to the light reflection principle of crystalline silicon.It does not emit light but can reflect light.✔FRONT AND REAR REFELECTION: The diameter of the front reflector mounted on the handlebar is 22.2 mm.The diameter of the reflector mounted on the handlebar is 28.6 mm.✔PATFITE QUALITY: Lightweight, waterproof, robust, long service life.✔USES: Can be used as brake lights, tail lights and license plate lights.It is suitable for most bikes with mirror mounts, you can install it on the front and rear of the bike.