Welch Allyn Diagnostic Headlight with direct power supply, provides illumination precisely where itís needed with cool, bright light that ensures comfort for both doctor and patient. Weighing approximately four ounces, itís one of the most comfortable and lightweight headlights available. Fits inside a shirt pocket and allows complete freedom of movement. The Welch Allyn Diagnostic Portable Headlight supplies bright, white, shadow-free light for true tissue color. Solid state lamp has 10,000-hour life expectancy with minimal degradation of light output. Supplied with soft Terrycloth headband or available with optional rigid headband. Also available with optional soft carrying case.