This ETC Source Four Jr ellipsoidal light comes with a bulb and an Edison plug. It's a great lighting solution, though it does not include a C-Clamp.

To use this ETC Source Four Jr ellipsoidal light, first, make sure the power is off. Then, connect the Edison plug to a suitable power source. Insert the included bulb carefully into the fixture. When positioning the light, keep in mind it has a 26 - degree beam. Since it doesn't come with a C - clamp, you'll need to find an appropriate way to mount it. As for maintenance, turn off the power and let the bulb cool down before cleaning the fixture. Check the bulb regularly for any signs of damage and replace it when necessary.