Ocean Reef Neptune III Basic Full Face Diving Mask
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.
Ocean Reef Neptune III Basic Full Face Diving Mask - Grey / S/M (Small / Medium) is backordered and will ship as soon as it is back in stock.
Pickup available at In Store
Usually ready in 2 hours
Ocean Reef integrated dive mask sizing. Imperial in bold, metric underneath.
| Size | Nose bridge to chin in · cm |
|---|---|
| S/M |
3.9–4.5 10–11.5 |
| M/L |
>4.5 >11.5 |
How Ocean Reef measures
It is essential to choose a suitable size. You can choose between size S/M (for adults with smaller faces, women and children over 12 years old) and size M/L (for an adult male, or larger faces).
- Nose bridge to chin: Measure the distance between the bridge at the top of your nose and the bottom of your chin.
- Try-on: There are two different size categories on the chart: Small/Medium and Medium/Large. If the measurements fall within the both ranges, 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. Once the mask is tight on your face, if there is NO SPACE between your chin and the silicone skirt of the mask, you've got the right size.
Source: Ocean Reef’s size chart (original chart). Values in the second unit come from Ocean Reef’s own chart where it prints them.
Ocean Reef Neptune III Basic Full Face Diving Mask - Grey / S/M (Small / Medium) is backordered and will ship as soon as it is back in stock.
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Product Information
The Ocean Reef Neptune III Basic is the entry model of the Neptune III full face mask range. It combines a single-piece full face mask with the Neptune III vertical, body-balanced second stage, so the diver breathes through nose and mouth with no mouthpiece and no jaw fatigue. The transparent polycarbonate visor is coated on both sides with siloxane resin for scratch and chemical resistance, and the patented air-circulation path keeps it clear during the dive.
A six-strap harness keeps the regulator in place if the diver is unconscious or struck, an internal device closes the nostrils for equalization without touching the mask, and the orinasal pocket keeps the breathing space small so the mask is hard to flood and easy to clear. The Basic ships as the mask with its integrated second stage and no first stage. It has an octopus/SAV port for the SAV III Basic surface air valve and a port for Ocean Reef communication units, both sold separately, so the mask can be built up over time.
Sizing follows the distance from the bridge of the nose to the chin: S/M fits 10 to 11.5 cm (3.9 to 4.5 in) and M/L fits more than 11.5 cm (4.5 in). The mask is CE marked, certified to EN 250:2014 as Category III personal protective equipment, and rated for cold water below 10 C. Ocean Reef covers the mask with a lifetime warranty and the other components for two years.
- Neptune III second stage: vertical, body-balanced design for smooth breathing at any depth
- Natural breathing through nose and mouth, no mouthpiece and no jaw strain
- Patented air circulation keeps the visor clear and dry
- Wide field of view from the single-piece polycarbonate visor
- Siloxane-coated visor on both sides for scratch and chemical resistance, impact tested to STANAG 4296
- Six-strap harness holds the regulator in place if the diver is unconscious or hit
- Internal nose-closing device for underwater equalization
- Orinasal pocket: hard to flood, easy to clear
- Upgrade ports for the SAV III Basic surface air valve and Ocean Reef communication units (sold separately)
- Cold-water CE certified, EN 250:2014, PPE Category III
- Warranty: lifetime on the mask, two years on other components
| Brand | Ocean Reef |
| Model | Neptune III Basic |
| Part numbers | OR025220 (S/M), OR025221 (M/L) |
| UPC | 764500013433 (S/M), 764500013440 (M/L) |
| Colour | Grey |
| Sizes | S/M: nose bridge to chin 10 to 11.5 cm (3.9 to 4.5 in) M/L: more than 11.5 cm (4.5 in) |
| Second stage | Neptune III vertical, body-balanced, integrated in the mask |
| Visor | Transparent polycarbonate, siloxane resin coating on both sides |
| Impact test | STANAG 4296: steel ball at 540 km/h (335 mph) |
| Harness | Six straps |
| Equalization | Internal nose-closing device |
| Certification | CE marked, EN 250:2014, PPE Category III (EU Regulation 2016/425) |
| Cold water | Rated for use below 10 C (50 F) |
| Compatible upgrades | SAV III Basic surface air valve (OR025030), Ocean Reef communication units |
| In the box | Neptune III Basic mask with integrated second stage |
| Warranty | Mask: lifetime. Other components: two years |
⚠️ 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.
