SMART CHARGING TECHNOLOGY. USB rechargeable bike light. All you need is a Micro-USB cable. Water resistant rated to IPX4 - Protected against splashing water from any angle.FOUR LIGHT MODE: Front cycle light supports full brightness, half brightness, fast flashing and slow flashing mode. Easy to detach and suitable for camping, walking dogs or outdoor adventure activities. Taillight features constant and flicker mode (4 MODE full brightness, half brightness, fast flashing and slow flashing mode) to alert following cars/ people. EASY INSTALLATION: Universal design mount, make one size to fit all bike Guaranteed, Mountain, Big Road Bikes, City Bikes, or any Bike including Kids bikes. The Akale bicycle light set installs in under 7 seconds. No matter what bike you are riding and its very strong adorable VERSATILE, MORE THAN A BIKE LIGHT - Can be used as an emergency flashlight, keep it inside your car, basement, attic, and emergency kit. Use it when you're running, jogging, hiking, camping, walking your dog, cycling, changing a tire, night time family/kids activities, power outage and MORE Enjoy enhanced visibility and comfort knowing you will be safe and secure at any time of the day. Perfect gift for family & friends, order 2 and give one to your friend GET YOURS TODAY