The Sea Dragon 2300 Auto boasts 2300 true lumens of brightness. Powered by a rechargeable 7.4 lithium ion battery, the light burns for a full hour at 100% power at constant brightness with its new CREE XP-L LEDs. The light features Auto Flash Detection Mode that turns off the light for 2 seconds when an external flash is detected. Auto Flash Detect helps eliminate undesirable shadows, color shifts or backscatter.The Sea Dragon 2300 Auto features an exciting new feature that will preserve your underwater eyesight and your battery: Auto-Brightness. Select the Auto-brightness feature as one of the four brightness options and the 2300 light’s photocell light sensor will automatically regulate brightness based on proximity to the object in 10-step brightness levels; look at something close like a gauge or your computer and the light will reduce to 10% brightness output, look at a long distance and the light automatically adjusts to full power. This feature can be easily over-ridden if a constant brightness level is preferred by simply selecting the 100%, 50% or 25% Brightness through the main control button. Featuring a wide, 100-degree beam angle (75-degrees underwater) that's perfect for cameras with a wide field of view, the light operates with only a single button, quickly adjusts between 4 power options, and is depth rated to 200 feet/60 meters. Quickly and easily expand Sea Dragon lighting with Flex-Connect - add grips, Flex Arms, trays and other accessories with just a click! Flex- Connect allows you to transform your camera set from compact to full-featured in just seconds, providing a quick way to adjust to any dive environment.