Kryptonite Street F-150 Light Front BlackFront Light Lumen output at high steady: 150 Total run time at high steady: 2h Compact, sleek design Robust safety features including daytime and nighttime 6 pulse modes Side illumination ports allow cyclists to be seen when riding across traffic lanes Fully USB rechargeable Memory function allows light to turn on at the last mode that was used TECH SPECS Light Type LED Output 150 lumens Run Time Up to 2h Battery Type Li Ion Lumen Range 101 150