Led bulb power 7 watt energy consumption 7 kwh1000h socket r7s voltage 230 v light colour warm white light output 450 lumen colour temperature 2 800 k lifespan 35 000 h style bulb housing colour rendering index ra 80 ra length 78 mm diameter 26 mm average annual electricity cost 01951 kwh 137 euros source average electricity cost based on figures from eurostat as of 2016