Knog PWR Lighthead 1800L. An 1800-lumen, LED light head which can be used with the PWR small, medium and large power banks. The light comes with a specially adapted circular beam that ensures intense flood lighting of oncoming objects with great side visibility. Fully customisable light modes can be created via Knog’s ModeMaker app using the integrated USB plug. Features. 1800 lumens light outputCompatible with PWR small, medium and large power banksCircular beam patternExcellent weather conditionsIntegrated USB plugCustomisable modeWeighs 100gDimensions: 39mm x 48mmBuy Knog Lights from Chain Reaction Cycles, the World’s Largest Online Bike Store.