Kit d'éclairage pour vélo - Rechargeable par USB - avec compteur de vitesse et avertisseur sonore - Lampe torche LED 800 lumens pour vélo

It features a built-in 4000mAh battery for approximately 6 hours of continuous use in high-brightness mode and 20 hours in low-brightness mode. Its waterproof design makes it suitable for everyday use in the rain. After use, simply wipe it dry. It has a speaker on the back and should not be submerged in water.