Ocean Reef Neptune III Package – Diving Full Face Mask W/ Int 2nd st. Surface Air Valve Hose Pressure Gauge Octopus SL35TX Int First Stage + Bump + Quick Connection Hose
Ocean Reef Neptune III Package – Diving Full Face Mask W/ Int 2nd st. Surface Air Valve Hose Pressure Gauge Octopus SL35TX Int First Stage + Bump + Quick Connection Hose - Black / S/M is backordered and will ship as soon as it is back in stock.
Pickup currently unavailable at 23D

The Neptune Space is available in two sizes, Small/Medium and Medium/Large.The sizing and measuring system were designed in accordance with the official measuring procedure used in the Los Alamos Scientific Laboratory Charts at the SBCCOM Mask Fit Facility-Aberdeen Proving Ground (Maryland, USA). Before purchasing a mask, the customer may use the calliper to take two simple face measurements. Using the Full Face Mask Size Recommendation Chart, he or she can evaluate the size category into which the measurements fall. There are three different size categories on the chart: Small/Medium, Both, & Medium/Large. If the measurements fall within the both category, then the diver should technically be able to wear either full face mask (M/L or S/M), and in that case should try on a mask to select the best fit. Please note that the chart boundaries fade. The fading areas represent less common face measurements. It is very likely that a mask will still fit comfortably even if measurements are located in these fading areas.
Ocean Reef Neptune III Package – Diving Full Face Mask W/ Int 2nd st. Surface Air Valve Hose Pressure Gauge Octopus SL35TX Int First Stage + Bump + Quick Connection Hose - Black / S/M is backordered and will ship as soon as it is back in stock.
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Description
Description
The Ocean Reef Neptune III INT Package is the ultimate full-face diving mask system, designed for divers who demand reliability, clarity, and safety. Combining the advanced Neptune III Integrated Diving Mask with premium accessories, this package delivers seamless performance in all underwater environments. The panoramic double-coated visor ensures crystal-clear visibility, while the integrated SL 35 TX 1st stage regulator and Extraflex Quick Disconnect Hose simplify setup and enhance breathing efficiency.
Ideal for both recreational and professional divers, this complete package includes an Octopus secondary regulator, BUMP backup mask, snorkel, and pressure gauge for added safety. The rugged Neptune III Backpack keeps gear organized and protected during travel. Whether exploring reefs or deep dives, the Neptune III INT Package offers unmatched durability, comfort, and peace of mind.
Features
Features
- Panoramic Full-Face Mask – Wide-field double-coated visor for distortion-free underwater vision.
- Integrated SL 35 TX 1st Stage Regulator – Ensures smooth, effortless breathing in INT configuration.
- Extraflex Quick Disconnect Hose – For fast, tool-free connections and hassle-free diving.
- Complete Safety System – Includes Octopus secondary regulator, BUMP backup mask, and pressure gauge.
- Durable & Lightweight – Polycarbonate visor resists scratches while maintaining clarity.
- Easy Equalization – Designed for comfortable pressure adjustment during descents.
- Neptune III Backpack Included – Heavy-duty storage for mask, regulators, and accessories.
- Certified for All Divers – Meets professional and recreational diving standards.
Specifications
Specifications
| Specification | Detail |
|---|---|
| Visor Material | Double-coated polycarbonate |
| Breathing System | Integrated 2nd Stage |
| Field of Vision | Panoramic view |
| Size Chart (S/M) | Chin to Eyes: 3.68-4.47" | Ear to Ear: 4.63-5.33" |
| Size Chart (M/L) | Chin to Eyes: 4.47-5.26" | Ear to Ear: 5.33-6.04" |
Payment & Security
Payment methods
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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.
Frequently Asked Questions
Why dive with a full-face mask like the Ocean Reef Neptune III?
A full-face mask integrates the second stage regulator into the mask, so there is no mouthpiece to bite and no regulator to lose — you breathe naturally through your nose and mouth, which many divers find far more comfortable and less fatiguing, especially on long or cold dives. The six-strap harness holds it securely, the field of view is wide, and because your mouth is free, the mask is ready for underwater communication systems. It is popular for cold water, public safety, and any diver who wants a more relaxed breathing experience.
What size Ocean Reef Neptune III do I need?
The Neptune III comes in two sizes, measured by the distance from the bridge of your nose to the bottom of your chin: Small/Medium fits roughly 10–11.5 cm (smaller faces, many women, and children 12 and up), and Medium/Large fits above 11.5 cm. The right fit leaves no gap between your chin and the silicone skirt. If you are unsure, measure nose-bridge to chin and send us the number and we will confirm the size.
Is the Ocean Reef Neptune III certified and safe for cold water?
Yes — the Neptune III is CE marked as Category III PPE, compliant with the EN 250:2014 diving standard, cold-water rated for use below 10°C, and tested to 61 meters. A patented internal air-circulation system keeps the lens from fogging and continually flushes exhaled air to minimize CO2 buildup, and a built-in 3D equalization device lets you close your nostrils to equalize without breaking the mask seal. It is a properly certified full-face system, not a surface snorkel mask.


























