Halogen light pin socket bulb reflector lamp power 50 watt energy consumption 50 kwh1000h series osram halopar 16 socket gu10 voltage 230 v light colour warm white luminous intensity 900 cd colour temperature 2 800 k beam angle 35 lifespan 2 000 h bulb shape reflector variable intensity dimmable uv filter mercury free length 53 mm diameter 51 mm average annual electricity cost 01951 kwh 976 euros source average electricity cost bas