This Orion Bicycle Taillight feature an one-touch switch with four different lighting modes depending on your preference. The taillight built in 800mAh rechargeable battery with Type-C charging port. The bike taillight is equipped with a mounting bracket that can be easily fixed to the handlebar and can be easily loosen and fasten, no tools are required. This bike light is versatile enough for cycling, hiking, camping, or any outdoor activity and can be used as emergency flashlight.