This demonstration video discusses and shows the features of the Big Blue CF-600 L.E.D. Dive Light. The CF-600 is a state of the art ultra bright L.E.D (Light Emitting Diode Technology). Perfect for all rugged outdoor use - anything from night dives to macro photography. 30 TIMES Longer Bulb Life - 10,000 hours!. High Intensity White L.E.D. light travels farther underwater for maximum visibility and truer colors. Magnetic ON/OFF switch for easy one-hand operation and greater reliability. You can turn the light head to change the beam angle from 8 degrees to 28 degrees.