Perfect for bicyclists commuting in low-light situations, this battery-powered package combines an entry-level one-LED white headlight and a three-LED red tail light. The headlight can be set for flashing mode (useful for cycling under city lights) or constant mode. Cateye"s OptiCube technology optimizes lens and reflector brightness. The compact tail light can be mounted on handlebar or seat post. Powered by two AA batteries, the headlight runs for 320 hours in flashing mode and 80 hours in constant mode. Powered by two AA batteries, the tail light runs 60 hours. About Cateye Founded in 1946 in Osaka, Japan, CatEye is the leading manufacturer of cycle computers, lights, and reflectors to cyclists in the world. In 1964, CatEye was the first in the industry to create a flashing lamp for bicycles, followed by their first battery headlamp in 1982, and the very first bicycle head lamp using white LEDs in 2001. The company"s Opticube lens and reflectors make the brightest and most efficient LED headlights. while their LD500 remains the only rear safety light that can meet the rigorous CPSC standards for reflectivity.