This ETC Source Four Jr ellipsoidal light doesn't come with a bulb or a C - clamp. It uses a stage pin. Note that bulbs and C - clamps are not included in the package.

To use this ETC Source Four Jr ellipsoidal light, first make sure you have a suitable bulb and a C - clamp as they're not included. Insert the bulb carefully into the light fixture. Use the stage pin to connect it to the power source. When using, keep it away from flammable materials. For maintenance, clean the light fixture regularly with a soft, dry cloth. If you notice any issues, stop using it immediately and check for damages.