Enhanced Visibility: Our bike taillight's 2835 LED white bead and 3014 LED red bead emit bright light to improve riding safety. Its low energy consumption ensures long-lasting battery life, providing optimal lighting during nighttime rides.Conveniently Sustainable: Reduce environmental impact with this bicycle taillight featuring eco-friendly LED lights. With USB charging and 250mAh battery, it lasts 7-24 hours after fully charged, providing long-lasting illumination for extended rides.Multi-Functional Illumination: Our bicycle taillights offer flexibility with white and red LED lights that switch seamlessly between tail and headlight modes. The multi-mode settings allow you to customize the lighting to fit any cycling scenario, for a safe and enjoyable ride.Effortless Bike Safety: Illuminate your biking adventures with these versatile taillights that easily attach to any part of the body or bike using an elastic rubber strap. No tools needed for their effortless and hassle-free installation and removal.Weather-Proof Safety: Our IP64 waterproof and dustproof bicycle taillight is built to withstand all kinds of weather, ensuring maximum protection for your ride. The PC material shell is shock-resistant and durable, providing safety and peace of mind. At only 21g, you won't even notice this rechargeable bike light back on your ride.