Sirius hri 440w h Osram mercury vapor bulb with reflector lamp for wash fixtures features Perfectly suited for small and lightweight moving heads Optimized burner design allows any burning position High luminance through very short arc and high pressure Bright light for brillant light effects Long lifetime Easy lamp replacement Stable light output over the entire lifetime abbreviation name sirius hri 440w h bulb type mercury vapor color rendering index cri 80 color temperature 7500k diameter in 2.55 Electrode gap mm 1.3 Length in 2.36 Luminous flux lm 18000 rated life hrs 1000 wattage w 440w voltage v 83v working distance mm 41 ca prop 65 yes ca prop 65 material mercury