Osram 64250 ESB 6V 20W G4

The Osram 64250 (FHE/ESB) 20 Watt 6 Volt light bulb is primarily used in projectors, medical lighting, microscopes lighting and ophthalmic uses. 

The 64250 Halogen Bulb is sometimes referred to as "HLX64250" which means that the bulb has Zenophot gas which replaces the krypton gas that is normally in most halogen light bulbs.