Kryptonite Street F-300 & Avenue R-30 Set Black 6F/5R Combo Rubber Strap USB 300/30Set of Front Light Street F 300 and Rear Light R 30 Lumen output a thigh steady: 300 Total run time at high steady: F 300 1h30, R 30 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 Light Type