ENLEE EN09 Bicycle Tail Light Bright Warning Light For Night Riding Highway Motorcycle Lights, Model: Ordinary Model1. IP66 protection level, complete protection from dust and rain, no fear of wind and rain 2. Intelligent model built in high precision intelligent sensor chip, can accurately detect the brakes 3. Large capacity battery with high efficiency circuitry, long lasting battery life 4. The tail light will automatically light up for 3 seconds to convey the information of deceleration to the rear, increasing the safety warning 5. High brightness + optical