Welch Allyn Headlight Solid State Portable Stretchers you can wear a hearing Foot Massagers Rolls you can wear a hearing aid and no one will notice Commodity Quality Certification: 3C Weighing four ounces it's one of the most comfortable lightweight headlights available * Rechargeable batteries housed in the headband make this a completely portable compact unit that allows the user freedom of movement * With a color temperature of 5500 Kelvin this light supplies bright white shadow free light allowing the end user to see tissue characteristics without distortion *Operating life expectancy is more than 10 000 hours * More energy efficient than incandescent and most halogen lamps * Cool beam is safe to touch * Instant light (less than 100ns) * Virtually maintenance free operation * No UV rays *