Don't let the name "Junior" fool you. The Streamlight Jr. Luxeon lights may be lightweight and compact but the light they produce is anything but small. The super high-flux 1 watt Luxeon LED emits a blast of bright light with a far reaching beam that you'd never expect from a flashlight this size. And the Jr. Luxeon lights are big on dependability too. They run up to 4 continuous hours on two "AA" batteries.