This ETC Source Four Jr ellipsoidal light operates at 575 watts with a 26-degree beam. It comes without a bulb and a C-clamp and features an Edison plug. Note that it does not include a bulb or a C-clamp.

To use this ETC Source Four Jr ellipsoidal light, first, you need to connect it to a power source using the Edison plug. Since it doesn't come with a bulb, you'll have to buy one separately and install it in the fixture. Also, as there's no C - clamp, you'll need to find an appropriate way to mount the light. When using, make sure the power supply matches the requirements of the light. For maintenance, keep the light clean and check the wiring regularly for any signs of wear or damage. If you notice any issues, stop using it immediately and have it inspected by a professional.