150W 150 Watt, 120V XM Compatible DE HQI Metal Halide Bulb 15K, 15000K Coral Reef Bulb Color Spectrum: 15,000k (Kelvin) Includes Free Gloves for Handling Best Combo of Color and PAR Operates on a HQI Metal Halide Ballast, Pulse-Start Ballast or Electronic Ballast Compatible bulb Guaranteed to meet or exceed manufacturers specifications