This ETC Source Four Jr ellipsoidal light comes with a bulb and an Edison plug. A great lighting solution, though it doesn't include a C-clamp.

To use this ETC Source Four Jr ellipsoidal light, first connect the Edison plug to a power source. Then, you can position the light as needed for your lighting setup. Since it doesn't come with a C - clamp, you'll need to find your own way to secure it if required. When it comes to maintenance, make sure to turn off the power before cleaning the light. Check the bulb regularly and replace it when it burns out. Keep the light in a dry and clean place to ensure its long - term performance.