"Through-Water" (Wireless-Through-Water) Voice Communications refers to underwater (u/w) communications that uses water as the medium to carry the voice signal.
Recreational version of the first functional wireless underwater communication system used by the Navy that received a 100% intelligibility score during testing.
3 complete diver receiver/transmitter units. Units operate using 6-AA batteries.
3 Communication masks. Black Rubber with Silicone straps. Masks work in conjunction with your dive mask to incorporate your 2nd stage and connect the transmitter/receiver unit for the diver. DOES NOT REPLACE YOUR NORMAL DIVING MASK.