This ellipsoidal light comes with a bulb and a stage-pin plug. However, it does not include a C-Clamp.

To use this ETC Source Four 750 19 Degree Ellipsoidal Light, first make sure to connect the stage - pin plug to a suitable power source. Then, install the included bulb properly. When positioning the light, you can adjust the angle according to your needs. As for maintenance, keep the light clean by gently wiping it with a soft cloth. Be careful not to touch the bulb with bare hands as the oil from your skin can reduce its lifespan. And remember, since it doesn't come with a C - clamp, you'll need to get one separately if you plan to use it for clamping.