Golf ball bulb led bulb energy rating a power 38 watt energy consumption 115 kwh1000h series osram led superstar classic p equivalent to light bulb 25 w socket e14 voltage 230 v light colour warm white light output 250 lumen colour temperature 2 700 k lifespan 25 000 h bulb shape golf ball style glass bulb variable intensity dimmable colour rendering index ra 80 ra length 79 mm diameter 45 mm average annual electricity cost 01951 kwh