Ocean Reef Neptune III Full Face Diving Mask

Ocean Reef Neptune III INT System: Full-Face Mask and Regulator Package for Serious Divers

The Ocean Reef Neptune III INT System is a complete, integrated full-face diving mask that combines the mask, a first-stage regulator, and a breathing hose into a single, unified piece of equipment.

This is not a standard mask-and-regulator pairing. It is a dedicated system designed around the idea that your face, your breathing, and your field of view should all work together as one unit.

If you are a recreational or professional diver looking to move beyond a traditional mask-and-regulator setup, this is worth understanding in detail before you commit.

What "Integrated System" Actually Means

With a conventional setup, your mask and regulator are separate pieces of gear. You hold the second stage in your mouth, and your mask sits over your eyes and nose independently.

A full-face mask changes that entirely. The Neptune III covers your entire face, from forehead to chin. Breathing happens through a second stage built into the mask itself, not through a mouthpiece you grip with your teeth.

This means no mouthpiece fatigue on long dives, no jaw tension, and the ability to breathe naturally through your nose or mouth inside the mask.

The SL35TX YOKE first-stage regulator connects to your cylinder valve and feeds air through a standard hose directly into the Neptune III's integrated second stage. The system ships ready to use as a complete breathing package.

The Polycarbonate Lens and Visibility

The lens is made from high-quality polycarbonate, which is impact-resistant and optically clear. Because the lens wraps across your full face rather than sitting over your eyes only, your peripheral vision is significantly wider than what a traditional two-window or single-window mask gives you.

This wider view is one of the main reasons photographers, videographers, and dive professionals choose full-face masks. You see more of the water around you without turning your head.

The Quick Removal System (QRS)

One of the most important safety considerations with any full-face mask is what happens if you need to remove it underwater. Because it covers your entire face, you cannot simply pull it off the way you would a standard mask.

The Neptune III addresses this with its Quick Removal System. In an emergency, this allows you to clear the mask from your face rapidly and switch to a backup regulator or ascend. Understanding and practicing the QRS before you dive is not optional; it is the kind of skill you should drill until it is automatic.

If you are not yet comfortable with emergency procedures or have not dived a full-face mask before, a few sessions in a pool before open water is strongly recommended.

Extender Frame and Customisation

The Neptune III includes an Extender Frame Accessories system. This is a mounting platform built into the mask's frame that lets you attach accessories directly to the mask itself.

Common additions include:

• Underwater communication units for diver-to-diver or diver-to-surface voice communication
• Lighting systems mounted forward of the lens
• Other task-specific add-ons suited to professional or technical work

The communication capability is worth pausing on. Because the Neptune III covers your mouth, you can speak inside the mask. With a compatible Ocean Reef communication unit fitted, that speech becomes transmittable. For dive professionals, underwater videographers, scientific divers, or anyone who needs to coordinate with a team, this is a practical operational advantage rather than a novelty.

What Comes With the System

The backpack is a practical inclusion. Full-face mask systems are bulkier and more involved to transport than a standard mask, and having dedicated, purpose-built carry protection matters if you are travelling to dive sites.

Materials and Construction

The mask body uses polycarbonate and silicone. Polycarbonate gives the frame structural rigidity and lens clarity. Silicone is used for the skirt, the part that seals against your face, because it is flexible, skin-friendly, and holds a reliable watertight seal across a wide range of face shapes.

The Neptune III is listed as an adult-sized system. Ocean Reef full-face masks are known for their adjustable fit systems, but you should confirm sizing compatibility with your face shape before purchasing, since a poor seal on a full-face mask is a more significant issue than on a standard mask.

Who This System Is For

The Neptune III INT System suits experienced recreational divers and professionals who have a specific reason to want full-face coverage. That includes:

• Divers who experience jaw or teeth discomfort with conventional mouthpieces on long dives
• Professionals who need integrated communication capability
• Underwater photographers and videographers who benefit from the wider field of view
• Dive instructors and public safety divers working in environments where a sealed face is an advantage

Who Should Think Carefully Before Buying

A full-face mask is not the right starting point for a new diver. Clearing a standard mask, managing a regulator, and building comfort underwater are foundational skills best learned with conventional equipment.

If you have never dived a full-face system before, the learning curve is real. Emergency procedures, equalisation through the mask, and the different breathing feel all require deliberate practice.

The YOKE first-stage configuration means the Neptune III connects to standard YOKE-style cylinder valves, which are common in most recreational diving destinations. If you regularly dive in regions where DIN valves are standard, you will need to check compatibility or use an adapter.

The Bottom Line

The Ocean Reef Neptune III INT System is a well-considered, purpose-built package for divers who know why they want a full-face mask. The integrated regulator, communication-ready frame, and included carry system make it a coherent kit rather than a collection of parts.

If you are moving toward professional diving, extended work dives, or simply want the breathing comfort and visibility that a full-face system provides, the Neptune III is a serious option. Go in knowing it rewards preparation and proper training.