This device is compatible with energy classes A++ to E on a scale from A++ (maximum efficiency) to E (minimum efficiency) The device is sold with an A+ energy rated bulb Brightness : 165 lumens per bulb Volume : 2.5 Watt per bulb Socket / bulb: 1 x GU10 2.5 Watt 3000 Kelvin 165 Lumen (including bulb) This product is a containing product. Containing products are luminaires that can be disassembled for a separate check of the light source(s) they contain. This product contains a light source of energy efficiency class f