Where others make claims, Maxillume x-500 delivers. 50,000 (FIFTY THOUSAND) true measured lumens. For ship board applications, fixed locations, or terrestrial vehicles, the Maxillume x-500 illuminates your work space and beyond. Unlike high pressure sodium or HID, Maxillume x-500 delivers clean, bright light without hot-restrike issues or work shut downs related to blown bulbs or ballasts. conforms to UL STD 1598, ETL Listed, fully sealed, and tested to military standards for shock and vibration.