- Easily inflated at depth
- Diver Alert Markers use an integrated pressure-relief valve, allowing them to be deployed from depth
- Oral inflate marker does not use a pressure-relief valve; it is suitable for surface deployment
- 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
- Halcyon Diver Alert Markers (except semi-closed model) feature our No-Lock® (one-way valve) construction for oral inflate or LP hose connection
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