Halcyon Big Closed-Circuit Diver Alert Marker 18 kg/40 lb
In stock — ships from Irvine, CA
This item is currently on backorder. Order now to reserve yours, and we will ship it as soon as it is back in stock.
Halcyon Big Closed-Circuit Diver Alert Marker 18 kg/40 lb - Orange is backordered and will ship as soon as it is back in stock.
Pickup currently unavailable at 23D
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Product Information
Designed for open-water signaling and emergency flotation, this Diver Alert Marker provides redundant buoyancy and high surface visibility. The marker includes an integrated over-pressure relief valve and bottom dump for controlled venting, and it accepts oral inflate or low-pressure hose connection via a No-Lock® connector.
- 18 kg / 40 lb redundant lift, high-visibility surface marker for diver safety
- Durable coated nylon construction with Coast Guard-approved SOLAS reflective tape for visibility
- Integrated over-pressure relief valve and bottom dump for controlled venting
- No-Lock® connector for oral or LP hose inflation, easily inflated at depth
- Deflates to fit thigh pocket or backplate MC Storage Pak, available in Orange, Pink, Yellow
| Materials | Coated Cordura-style nylon shell with reinforced seams and SOLAS reflective tape |
| Inflated Height | 54 in (1.4 m) |
| Pack Dimensions (deflated) | 14 in × 10 in × 3 in (approximate when stowed) |
| Lift Capacity | 18 kg / 40 lb redundant buoyancy |
| Inflation Method | Oral inflate or LP hose via No-Lock® connector |
| Pressure Control | Integrated over-pressure relief valve and bottom dump vent |
| Visibility | Coast Guard-approved SOLAS reflective tape and high-visibility color options |
| Compatibility | Fits Halcyon thigh pocket or backplate MC Storage Pak when deflated |
| Color Options | Orange, Pink, Yellow |
| Includes | Integrated valve, No-Lock® connector, SOLAS reflective tape |
⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

















