Halogen light golf ball bulb energy rating c power 46 watt energy consumption 46 kwh1000h series osram halogen classic p eco equivalent to light bulb 60 w socket e27 voltage 230 v light colour warm white light output 700 lumen colour temperature 2 700 k lifespan 2 000 h bulb shape golf ball style glass bulb uv filter colour rendering index ra 80 ra length 75 mm diameter 45 mm average annual electricity cost 01951 kwh 897 euros sou