Cateye EL010 White/LD610 White Head Light and Rear Light Head Light :400+ candlepower Flashing and constant modes; 60 hours run time in flashing mode; 15 hours run time in constant mode Runs on 1 AA battery Taillight's 5 LEDs and This is CatEye's brightest tail light! 4 flashing modes, and a universal mount, make this