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The Aquatec Sub-Alert is not only starting to be a major requirement for many dive-aboard and dive operations; it is also an essential piece of gear that will add to the enjoyment of the dive to any buddy team that need to get each others attention underwater. Features: Horn works both UNDERWATER and on the SURFACE Volume: Underwater 115-125 dB Above water range approx 0.5 - 1.0 mile
