Halcyon SMB Oral Inflate Diver Alert Marker 3.3'

Halcyon, no OPV 3.3' (1m) Divers Alert MarkerOral inflate marker does not use a pressure-relief valve; it is suitable for surface deployment only.     When deflated, all markers fit in a Halcyon thigh pocket or backplate Storage Pak     Big and Super Big Alert Markers are marked with Coast Guard approved SOLAS reflective tape     Semi-closed Alert Markers have a baffled bottom for filling with a regulator’s second stage     Halcyon Diver Alert Markers (except semi-closed model) feature our No-Lock® (one-way valve) construction for oral inflate or LP hose connection