Halogen light pin socket bulb reflector lamp power 25 watt energy consumption 25 kwh1000h series osram decostar 51 eco socket gu5 3 voltage 12 v light colour warm white luminous intensity 1 000 cd colour temperature 3 000 k beam angle 36 lifespan 2 000 h bulb shape reflector variable intensity dimmable uv filter length 45 mm diameter 51 mm average annual electricity cost 01951 kwh 488 euros source average electricity cost based on fi