A genuine Schiefer Lighting 24V 40W navigation lamp with a standard E27 screw base, rated at 26 candela for marine navigation light output requirements. Schiefer is a specialist marine and aviation lamp manufacturer. Specs: Schiefer Lighting | 24V | 40W | E27 | 26cd | Navilite™ range Common uses: Marine vessel navigation lighting Voltage 24V Power 40W Base E27 Origin Germany Filament Axial Life 1500h Efficiency 17% Bulb T38 Diameter 39mm OAL 110mm LCL 68mm Prod. type ShipNavigation Frequently Asked Questions What is an E27 navigation lamp used for? E27 navigation lamps are used in marine vessel navigation and signalling lighting systems. What voltage is this Navilite lamp? This lamp operates at 24 volts. What wattage is this navigation lamp? This lamp has a 40W power rating. What base does this lamp use? It uses an E27 screw base. How long does this lamp last? The rated life is approximately 1500 hours.