Halogen light pin socket bulb energy rating c power 10 watt energy consumption 10 kwh1000h series osram halostar standard socket g4 voltage 12 v light colour warm white light output 140 lumen colour temperature 2 800 k lifespan 2 000 h style glass bulb variable intensity dimmable uv filter colour rendering index ra 100 ra length 33 mm diameter 10 mm average annual electricity cost 01951 kwh 195 euros source average electricity cost