Halogen light reflector lamp power 28 watt energy consumption 28 kwh1000h series sylvania halogen classic eco socket e14 voltage 230 v light colour warm white light output 335 lumen colour temperature 2 900 k lifespan 2 000 h bulb shape reflector variable intensity dimmable length 105 mm diameter 65 mm average annual electricity cost 01951 kwh 546 euros source average electricity cost based on figures from eurostat as of 2016