Halogen light pin socket bulb reflector lamp energy rating b power 50 watt energy consumption 50 kwh1000h series osram decostar 51 titan socket gu5 3 voltage 12 v light colour warm white luminous intensity 2 200 cd colour temperature 3 000 k beam angle 36 lifespan 2 000 h bulb shape reflector style bulb housing variable intensity dimmable uv filter diameter 51 mm average annual electricity cost 01951 kwh 976 euros source average e