This ETC Source Four Jr ellipsoidal light comes with a bulb and an Edison plug. Note that it does not include a C-Clamp.

Using this ETC Source Four Jr ellipsoidal light is easy. First, connect the Edison plug to a proper power source. The included bulb will start illuminating right away. Remember, this light doesn't come with a C - clamp, so you'll need to get one if you plan to clamp it somewhere. For maintenance, keep the light clean by gently wiping it with a dry cloth. Don't use any harsh chemicals as they may damage the surface. When not in use, store it in a dry and cool place to prolong its lifespan.