?Super Brightness with 3T6 LED?: Front bike light Utilizes 3 Cree neutral white LEDs, max brightneess is up to 6000 lumens. Light range is up to 300-500 meters. Aluminum alloy with acrylic lens give stronger light penetration. 3 light modes- High/Low/Strobe mode. Please take note: the taillight need to take out the insulation pie to use !!! ?USB Rechargeable and USB Output as Power Bank?: The Front bike light built in 5200 mAh USB rechargeable battery forLong runtime to ensures that you reach your destination safely on dark nights,avoiding the battery run out and effect your safety and travel. It can be easily recharged by USB cable through computer, laptop or portable power, etc. It also can work as a Power Bank to charge your phone for continuous navigation. ?Low-Power Warning and Charging Indication Function?: When you use it, The bike light indicator green--red, when the red show, the bike light need to Charge ASAP. And when u charging, indicator light is red, when fully charged, indicator light turn to green. ?Easy Installation and Dismount?: Attaches in seconds with zero tools, leave your tools at home, you won't be need them. The bike light attaches to your bike in seconds with zero tools and it also have 2 rubber band to help u adjust to suit handlebar mount sized. Also can rotatable in 360 degree, you can fix this in your bike ,and change the angle by yourself. ?Waterproof Design?: Highest water resistant level of IPX-5, no matter in heavy rain or thick fog. The bike light will always function normally ensuring your safety during your night riding. Note:can't put it into water directly? It also can be used as a flashlight for an emergency.