A Signal Only Works
When It Is Seen

The team reaches the edge of the reef as the current begins to press from the side. Visibility is manageable, but no longer wide open.

The lead diver turns toward the new direction. A few metres behind, the buddy raises a hand to signal—at exactly the moment the lead diver is looking ahead.

No one is lost. Nothing dramatic has happened. It is simply one of the limits of underwater communication: a hand signal depends on shared attention.

Two connected DAÏVE HUDs can share essential buddy status. The communication design combines optical and acoustic links and supports a visible-light cue, one-button Team Call and messages selected before the dive, including regroup, follow me or direction.

These functions add a coordination layer. They are not free-text chat, a promise of continuous connection or a replacement for visual contact, standard signals, team discipline, judgment and backup procedures.

No communication-distance claim is published until test conditions and measurement definitions are aligned.