Ultra-slim head. More freedom of movement and an unobstructed view for the examiner. Built-in temperature filter. Avoids patient discomfort. Exceeds all relevant quality standards. Guaranteed protection for the patient even if e.g. a bulb fails. Stay-put construction of flexible section. Adjust the light to virtually any position and it "stays-put", will not sag or droop. Special non-tip wheeled stand. Resists tipping to improve safety in clinic and practice. Long-life 12 V/20 W lamp. 4000 hours bulb life. 90,000 Lux light output at 30cm. Bright, white light.