Halogen light power 48 watt energy consumption 48 kwh1000h series sylvania eco socket r7s voltage 230 v light colour warm white light output 750 lumen colour temperature 2 900 k lifespan 2 000 h bulb shape tube light style glass bulb variable intensity dimmable colour rendering index ra 100 ra length 80 mm diameter 12 mm average annual electricity cost 01951 kwh 936 euros source average electricity cost based on figures from eurostat