Kryptonite Alley F-650 Headlight and Avenue R-50 Taillight SetThe Alley F 650 Avenue R 50 COB light combo includes a 650 lumen front light with a 50 lumen rear light. Both lights feature side illumination ports to allow you to be seen when riding across traffic lanes, and handy features such as memory function which turns the light on at the last mode it was turned off. Avenue F 650 modes include high steady, medium steady, low steady, daytime pulse, nighttime pulse and economic flash Avenue R 50 COB modes