Big Diver's Alert Marker, 4.5' (1.4 m) long, closed circuit: choose orange or yellow Halcyon Diver Alert Markers provide maximum visibility and redundant flotation to support diving safety and peace of mind. Marker buoys are essential safety equipment in the event of separation from the dive team or surface vessel.

Key Features of Halcyon Big Diver's Alert Marker:

• Easily inflated at depth
• Diver Alert Markers use an integrated pressure-relief valve, allowing them to be deployed from depth
• When deflated fits in a Halcyon thigh pocket or backplate Storage Pak
• Big Alert Markers are marked with Coast Guard approved SOLAS reflective tape
• Features Halcyon's No-Lockå¨ (one-way valve) construction for LP hose connection