Description Super bright to keep you safe: 180 adjustable buttons and 5 LED bulbs, vertical long line design to increase lighting range. Whether you're running, walking your dog, biking, skateboarding, or hiking, these security lights will keep you safe. Multifunctional safety light: 4 flash modes, the LED flashes during normal driving, and the brake or deceleration light will stay on for 2 seconds to issue a warning. Automatically shuts off when parking, no manual operation required. USB rechargeable: 2 hours charge = 2 to 6 hours lasting. For fast charging, simply connect the cycling light to any USB device such as a power bank, car charger or AC outlet adapter. QUICK SETUP: Attach the adjustable buckle to the bike pole, tighten the screws, and slide the taillight into the track. Products include tail lights, USB charging cables, and adjustable bike buckles. Wide Application: This bike light is perfect for cycling, mountain biking, racing, cyclocross, racing, hiking, camping or outdoor activities. LED USB bike lights are ideal for nighttime safety.