Halogen light incandescent light energy rating d power 42 watt energy consumption 42 kwh1000h series osram halolux eco equivalent to light bulb 60 w socket b22 voltage 230 v light colour warm white light output 630 lumen colour temperature 2 900 k lifespan 2 000 h bulb shape standard style glass bulb variable intensity dimmable uv filter diameter 55 mm average annual electricity cost 01951 kwh 819 euros source average electricity cos