The Sirius HRI 440W X (55218) powered by Osram is a professional customized high-intensity discharge lamp engineered for compatible 440W moving head fixtures. It delivers 22, 800 lumens at 7000K with Ra 80 for powerful throw and clean, cool-white output. Electrical specifications include 440W nominal wattage, 83V nominal voltage, and 5.3A nominal current. Optics geometry includes a 41mm working distance and a 1.0 mm electrode gap (cold). Nominal lifetime is 1, 500 hours. Common compatible fixtures include Clay Paky Mythos 2 and Claypaky Super Sharpy 2.