Voltage 6, Wattage 20, Lumens 480, Base G4, Shape T3.5, Overall Length (mm) 31, Life Hours 100, 54261 (64250HLX), HLX Xenophot, Manufacturer: Osram-Sylvania Shin Nippon - Slit Lamp SL202P - ESB Replacement Light Bulb - Equipment to Lamp - 54261 (64250HLX) - HLX Xenophot - Manufacturer: Osram-Sylvania