Golf ball bulb led bulb energy rating a power 55 watt energy consumption 6 kwh1000h series philips corepro ledlamps philips corepro ledluster equivalent to light bulb 40 w socket e14 voltage 230 v light colour warm white light output 470 lumen colour temperature 2 700 k lifespan 15 000 h bulb shape golf ball style glass bulb variable intensity not dimmable colour rendering index ra 80 ra length 86 mm diameter 43 mm average annual electri