Compact Design, Big Performance: Don’t let size fool you! Our mini rear bike light delivers the same powerful illumination and smart features as the original, in a sleek, ultra-lightweight package. Perfect for cyclist who want top-tier safety without the bulk Smart Brake Sensing Technology: Stay visible and secure with intelligent brake-sensing technology. When you brake, the bicycle rear lights automatically highlight, alerting riders behind you and enhancing safety during nighttime or low-visibility cycling 5 Dynamic Modes for Every Cycling: Whether you're cycling through the city or on rugged trails, choose from 5 versatile modes: (1) Normal Flash, (2) Breathing Flash, (3) Fast Flash, (4)Jumping Flash, (5) Steady On. Tailored for all conditions, day or night, this mini bike rear light has your back Smart Auto On/Off: Experience the convenience of smart functionality. Motion and light sensors automatically power off the light after 30 seconds of inactivity or daytime enough sunlight under the Auto Modes, and it reignites once movement or night inadequate light is detected. For uninterrupted visibility, simply choose Manual Modes to disable the bike taillights sensor Long Battery Life & Built to Endure All Weather: Enjoy up to 25 hours of battery life on a single charge. With a 250mAh Li-ion battery and low power indicator, you’ll always know when it’s time to recharge. The mini light is made from durable aluminum alloy with an IPX6 waterproof rating, ensuring reliability in rain or shine