Berchtold Chromophare D540 Surgical Light FeaturesIllumination Where and When You Need ItHighly efficient mirrored polygon reflector returns 98% of original illumination to the site for bright, focused and shadow free illumination.Color corrects at 4300 -4500K for accurate color rendition and tissue differentiation.D 540: Adjustable field diameter, 31″ Depth of field and intensity of 145,000 luxEasily ManeuverableUltra-light, drift-free suspensions offer fingertip