Kryptonite Street F-500 / Avenue R-45 Set Light Set BlackSet of Front Light Street F 500 and Rear Light R 45 Lumen output at high steady: 500 Total run time at high steady: F 500 1h30, R 45 1h30 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 Rear light includes 5 modes TECH SPECS Primary