Kryptonite 110 to 1000 lm Bicycle Headlights
About Kryptonite - "The people at Kryptonite have a pure passion for creating the best security in the world. It's their innovative product designs, intimate knowledge of market trends and complete commitment to customers that will continue to keep the competition striving to reach the high bar Kryptonite sets and allows their customers to feel free to stop wherever they want."
A lumen is a measure of the total "amount" of visible light emitted by a source. The higher the lumen rating, the brighter the light.