Halcyon's series of Diver Alert Markers provide maximum visibility and redundant flotation at the surface. Open water divers should always carry a marker buoy they can send up in the event of separation from buddy, primary group, or boat.

Halcyon Diver Alert Markers feature closed-circuit (one-way valve) construction

Inflate at the surface to attract attention

Inflate at depth to send up as a surface marker

All markers are small enough when deflated to fit in a Halcyon thigh pocket or MC Storage Pak