The Sirius HRI 440W H (55189) powered by Osram is a professional customized high-intensity discharge lamp engineered for compatible 440W H moving head enclosures used in touring, clubs, theaters, and production environments. It delivers 18, 000 lumens at 7000K with Ra 75 for crisp, cool-white output. Electrical specifications include 440W nominal wattage, 83V nominal voltage, and 5.3A nominal current. Designed for entertainment fixtures, it supports any burning position. Optics geometry includes a 60mm working distance and a 1.3 mm electrode gap (cold). Nominal lifetime is 1, 000 hours.