5 Red Light Modes: The taillight includes 5 different lighting modes, click the tail light button to switch between different lights: running, cycle, breathing light, fast flash, and slow flash. The brilliant light from these safety lights will ensure your safe, designed to alert following cars or people Enhancing Visibility: 120 lumens brilliant bright making them an essential safety accessory for night riding. Necessary safety equipment for any low-light activity. A great addition to your outdoor or reflective gear. Choose your adventure, grab your lights and you're ready to go USB-C Rechargeable: No more hassle of changing batteries. 1h charging, 10h lasting. Just connect the rear bicycle light to your power bank, car charger, or AC outlet adapter for a quick charge. (For your best experience, please fully charge the taillight before your first use) Universal Warning Light: Can be used as a warning light for running, biking, walking, hiking, jogging, camping, backpacking, children, dogs, walkers, strollers, wheelchairs and more Easy to Install: Easy installation and removal in just a few seconds. Stay on securely