This Ushio incandescent light bulb is 15 watt 6 volt. It has a rated life of 200 hours and a FC6Z filament. This bulbs overall length is 2.12 inches and has a BA15d Double contact bayonet base. Features: - ANSI Code: SM-8018, INC6V-15W/T19X52 - Wattage: 15W - Voltage: 6V - Base: BA15d - Average Rated Life: 200 hoursProd. ID / Ansi codeSM-8018DescriptionSM-8018, INC6V-15W/T19X52Description 215W 6V BA15dItem TypeIncandescentBaseBA15dVoltage6vWattage15wBurn PositionANYBulb ShapeT6Bulb finishCLEARFilamentC-6ZLife (hr)200Diameter (mm)19MOL (mm)54Lgiht Center Length (mm)39