The Night Runner 270° Shoe Lights are designed to help you avoid dangerous while you’re running, walking, hiking, biking or workout at night. They provide a 270-degree arc of illumination, 2 ultra-light LED light units with back-facing red tail lights, 75-lumen LED light units and up to 30 feet in forward beam distance. They are also water-resistant casing to keep you safe while pouring rain or uneven terrain. These rechargeable shoe lights for running at night charge by USB port giving 4-8 hours of use per charge. cool running gear for all weather conditions.