Voltage 6, Wattage 6, Base E10, Shape G4.5, Overall Length (mm) 26MM, Life Hours 600, 8000245 SM-78024, 6V-6W NIKON OPTHALM 30, Manufacturer: Nikon Nikon - 78021 Slit Lamp - 78024 Replacement Light Bulb - Equipment to Lamp - 8000245 SM-78024 - 6V-6W NIKON OPTHALM 30 - Manufacturer: Nikon