Krypton/Xenon E-12 Bulbs
E-12 Base Krypton/Xenon Light Bulbs
E12 is the smaller candelabra base. It's commonly used for nightlight bulbs, and sometimes for decorative light bulbs used in chandeliers and over bathroom mirrors.
A krypton xenon bulb contains a mixture of both xenon and krypton gases. When electricity is passed through a filament that is similar to that used in an ordinary incandescent bulb, it heats up and produces a brilliant white light.