An updated, redesigned version of Aquatec's Sub Alert, the Scuba-Alert Standard Horn from IvTv (Innovative Scuba Concepts) just may save your life if you run into trouble on a dive. It works both beneath the surface and above it, making a sound loud enough to be heard 0.5-1.0 mile away when above the water. The unit is compatible with all styles of inflator fittings on buoyancy compensation (BC) devices--except for the breathable type. It allows for an easy, in-line connection to your low-pressure hose and power inflator. The horn offers an intuitive button design for simple activation.