This demonstration video discusses and shows the features of the Ocean Reef Neptune Space G.divers Full Face Scuba Dive Mask. The Neptune Space G.Diver is the latest and most innovative and has an integrated surface air valve eliminates wasted air on the surface. Easily adaptable for a octopus regulator. State-of-the-art integrated regulator. Reduced internal volume for excellent buoyancy. Improved visual field; visible light transfer of visor is 92%. Premium grade silicone rubber bellows-type skirt for fit and comfort. Durable, scratch-resistant visor. New G.Diver exhaust valve for directing the exhaust for the best vision. Patented 3-D equalization system for easy ear clearing. Six strap head harness providing firm mask positioning and quick mask donning and doffing. Easy access purge button. Excellent for use in extreme conditions.