Halogen light pin socket bulb reflector lamp power 20 watt energy consumption 20 kwh1000h series osram halopar 16 superstar osram halopar 16 equivalent to light bulb 25 w socket gu10 voltage 230 v light colour warm white luminous intensity 230 cd colour temperature 2 800 k beam angle 35 lifespan 10 000 h bulb shape reflector variable intensity dimmable uv filter length 55 mm diameter 51 mm average annual electricity cost 01951 kwh 39