Osram VIALOX NAV-T 50W SUPER 4Y E27 type lamp with high-pressure sodium (HPS) designed for open and closed luminaires. The rated power of the lamp is 50 W with an E27 base, providing approximately 4200 lm luminous flux. It produces warm amber light with a color temperature of about 2000 K. It is intended as a direct replacement for standard NAV lamps where compatible starters/batteries are used. The rated lifetime ranges between 20,000 and 28,000 hours, depending on the source. Typical applications include street lighting, industrial, and decorative lighting.