Road safety is a necessary to all the drivers in the world today. Having your bicycle well light to provide you with the visibility requiredby other drivers to see you, as well as allow you to clearly see the hazards on the roads is very important. This bike LED light can also be turned into a headlamp and is strong enough to survive any extreme sport that requires some extra light. The LED emitter provides 1600 lumens when set to maximum and has a great strobe feature. The external battery pack is 4400mAh and provides 4 hours run time at full power, which is enough to meet your needs of lighting. In addition,this product is waterproof and can be used anytime, rain or shine!