4000 Kelvin, neutral-white. 850 lumen. Weighted energy consumption 10 kWh/1000h. Energy efficiency class A+. Colour rendering index 80 Ra. voltage 220-240 volt. For art., No. 820 11, 823 05, 823 06: 10 watt, lumen: E27, luminosity: 10,000 h, very low use of energy 6 High powered LED of the newest generation, warm white and cold white LEDs can be dimmed separately