This ETC Source Four Jr ellipsoidal light comes with an Edison plug. Note that it doesn't include a bulb or a C - clamp.

To use this ETC Source Four Jr light, first, connect it to a power source using the Edison plug. Since it doesn't come with a bulb, you'll need to purchase and install a compatible one. Also, if you need to secure the light, you'll have to get a C - clamp separately. When using, make sure the power source matches the light's requirements to avoid any electrical issues. For maintenance, keep the light clean by gently wiping it with a dry cloth. Don't use any abrasive materials that could scratch the surface. Store it in a dry place when not in use to prevent damage.