Not yet available. Prognosticator Says Scheduled for distribution sometime this year. Operational and technical challenges remain. The Promise Simple, dependable and clear underwater voice communication units that won't degrade air delivery or decrease air supply, with a minimum range of 300 feet, even under difficult conditions. And bubbles, plants, background noise and temperature changes can still interfere.
Most units increase air consumption and breathing resistance.
Prognosticator Says Despite problems, will rapidly become mainstream. The heart and lungs of scuba diving, our sport's very name refers to this breathing device. But there's a good chance mechanical improvements have peaked and today's top designs are just about as good as they're gonna get. These combo alternate air sources and power inflators have already improved safety by making both of them easier to find while eliminating a hose and traditional octopus, resulting in less gear, less hassle, less drag. An important innovation.