Energy saving bulb energy rating a power 23 watt energy consumption 23 kwh1000h series osram dulux intelligent longlife osram dulux el longlife equivalent to light bulb 120 w socket e27 voltage 230 v light colour neutral white light output 1 410 lumen colour temperature 4 000 k lifespan 20 000 h bulb shape compact fluorescent tube style bulb housing variable intensity not dimmable length 170 mm diameter 58 mm average annual electricity cost 0