SMART CHARGING TECHNOLOGY: Bicycle lamp, these LED bicycle lights shine particularly brightly in the dark. Charge the bicycle lights from a device with a USB port. Never waste money on batteries again. The automatic and fully charged shutdown system ensures safety and longer battery life.FOUR LIGHT MODE: Bicycle light set the front light and the rear light have a one-touch switch with four different lighting modes, full brightness, half brightness, fast flashing and slow flashing.EASY INSTALLATION: Advanced and flexible silicone attachment straps provide great security and hold the USB rechargeable bike light set firmly enough, the bike light can be installed in less than 7 seconds. They are small, compact and easily portable, suitable for all types of bicycles such as children's and racing bikes.MUTIFUNCTION: This bike light set is versatile enough for cycling, hiking, camping or outdoor activities and can be used as an emergency flashlight. This is great for cycling at night or in places where visibility and safety are important. Just start your next adventure with us.This small but bright LED bike light gives you and your family the protection you need, whether you are riding on a crowded, paved road or enjoying the great outdoors in the wild. Choose white for the front headlight or red for the rear taillightConnect the USB cable to the USB input port on the bike lightPlug the other end of the cable into either a power adapter(not included) that is plugged into an electrical outlet or into a USB port on an active computerThe front light LED indicator will glow green when the front light is fully charged and the rear light will be orange when finishedpackage contents1 X headlight (white light)1 X taillight (red light)2 x USB line