500 Series LED Headlight. Powerful and lightweight our single watt LED at 5250 degrees Kelvin produces a bright, white, cool, shadow free light, with 50,000 hours of life! Includes universal 100-250v DC adapter with 10' cord.  Also available with Europlug.  Compared with Welch Allyn's 1 watt we're brighter and we are priced substantially less!  You'll not only feel the difference in the pocket, you'll see it!  Optional battery Pack connects directly to the headband allowing complete freedom of movement.