Energy saving bulb energy rating a power 11 watt energy consumption 11 kwh1000h series sylvania mini lynx fast start socket e14 voltage 230 v light colour warm white light output 575 lumen colour temperature 2 700 k lifespan 6 000 h bulb shape compact fluorescent tube style bulb housing variable intensity not dimmable colour rendering index ra 80 ra special feature contains mercury length 99 mm diameter 48 mm average annual electricity cost