U29 Technology Light intensity at 1 m distance (Ec) - 160.000 lux Light head diameter - 40 cm Color temperature (2 selections) - 4.500 to 5.000K Color rendering index (CRI) - 96 Ra Diameter adjustment - Electronic d10 light field diameter where illuminance reached 10% of Ec - 210 mm Light field diameter adjustable from-to - 140 - 260 mm Average LED life - > 60.000 hours Control of the illuminance - 25 - 100 %