This ETC Source Four 750 Ellipsoidal Light comes without a bulb and C - clamp, and has a stage pin. Known issue: it doesn't include a bulb or a C - clamp.

Using this ETC Source Four 750 Ellipsoidal Light is straightforward. First, you'll need to purchase a compatible bulb and a C - clamp separately as they aren't included. Install the bulb carefully and use the C - clamp to secure the light in place. When using the light, make sure the stage pin is properly connected. As for maintenance, keep the light clean by gently wiping it with a dry cloth. Don't expose it to excessive moisture or dust. If you notice any problems, check the connections first and then consult a professional if needed.