For scuba divers, communication below the surface is a challenge. Hand signals work well, but they are hampered by one obvious issue: the signals depend on divers looking at each other. But improving underwater communication is difficult, and radio waves used for land communications instantly fade out underwater, but Oceans has developed the Ocean S1 Supersonic to address this long-standing problem. A next-gen dive computer with built-in buddy communications The Ocean S1 Supersonic is a full-colour wrist-worn dive computer with an ultrasonic signalling device that allows you to ping one or more divers whilst underwater. (range 15 metres/45 feet) On…