Smart charging technology. USB rechargeable bike light. Send a USB cable, you don't have to worry. Four light modes: The front cycle light supports full brightness, half brightness, fast flashing and slow flashing modes. Easy to disassemble for camping, dog walking or outdoor adventures. The tail light has constant and flashing modes (4 modes full brightness, half brightness, fast flashing and slow flashing) to alert the car/person behind. EASY TO INSTALL: Universal design bracket, one size fits all bikes, mountain bike, fat bike, city bike or any bike including kids bikes. The bike light set installs in 7 seconds. It's super cute no matter what bike you ride Versatile, not just a bike light - use it as an emergency flashlight, keep it in your car, basement, attic, and emergency kit. Use it when running, jogging, hiking, camping, walking your dog, biking, changing tires, nighttime family/kids activities, power outages, and more! Enjoy improved visibility and comfort knowing you'll be