To use this ETC Source Four 750 ellipsoidal light, first attach it securely using the stage pin and C - clamp. Then, insert the provided bulb. When using, make sure it's in a well - ventilated area to avoid overheating. Keep the light away from water and other liquids. For maintenance, regularly check the bulb for signs of damage and replace it if necessary. Wipe the exterior with a soft, dry cloth to keep it clean. Do not touch the bulb with bare hands as the oils can cause it to burn out faster.