YUKON EXTREME Princeton Tec The most versatile and longest burning headlamp from Princeton Tec. The remote 8AA battery pack clips to gear to minimize weight on head. Switch between a high power Xenon bulb for long range and three high output white LED's. Light adjustable between 4 levels of brightness. Power: 39 lumens. Water resistant. Burn time: 3-5 hrs (high), 12-15 hrs (low), 100+ hrs (high LED), 200 hrs (low LED).