You just got suited up for your first dive of your vacation in St. Somewhere. You test your camera light system one last time before taking the plunge, and you're bulb is burned out. The worst thing that can happen on a holiday dive, malfunctioning equipment and you don't have a spare bulb. Don't go on a trip without spares. Ikelite's replacement bulb 100 watt lamp for Pro Video Lite III is just what you need. Always have a spare when you're on a dive or dive trip.