Voltage 24, Wattage 150, Base G6.35, Shape T4, Overall Length (mm) 50, Life Hours 300, Kelvin 3300, 54264 (64642HLX), 150W-24V-T4-300HR Manufacturer: Osram-Sylvania Martin Surgical - C905G - FDV Replacement Light Bulb - 54264 (64642HLX) - 150W-24V-T4-300HR - Manufacturer: Osram-Sylvania