Neptune III Basic

*this product isn’t available in USA

The Neptune III Basic is light, simple and no-thrills. The Neptune III Basic is a real Full Face Mask. It is the FFM of choice for your underwater work, your FFM of choice for biology studies, your FFM of choice for recreational and sport diving if you’re looking for a reliable, affordable entry level product.

Dive Safe, dive comfortable, dive dry and dive warm on a Full Face Mask.

  • 6 point strap harness
  • real orinasal pocket
  • hard to flood, easy to clear
  • widest field of view on the market
  • 2 sizes, “S” shape bellow technology face seal
  • 4 colors options: grey, emerald, pink, orange
  • cold water CE certified, full face 2 second stage
  • new generation, vertical body, balanced, Neptune III 2 second stage
  • tech PU and silicone rubber 2 second stage, shock absorbent, shell
  • light and durable
  • customizable and upgradeable
  • accessory Surface Air Valve
  • 2 year warranty


SKU: S/M Grey OR025220; M/L Grey OR025221; S/M Pink 0R025222; M/L Pink OR025223; M/L Orange OR025224; S/M Emerald OR025225; M/L Emerald OR0252226 Categories: ,

Additional information


S/M; M/L


S/M Grey OR025220
M/L Grey OR025221
S/M Pink 0R025222
M/L Pink OR025223
M/L Orange OR025224
S/M Emerald OR025225
M/L Emerald OR0252226


For California Residents: this product can expose you to chemicals including BPA, which is known to the State of California to cause cancer, and Phtalates, which are known to the State of California to cause birth defects or other reproductive harm. For more information go to


Grey; Pink; Orange; Emerald



After you read the above, you might also want to check out:

  • Apertometer: competitor comparison with our field of view.
  • Visor treating: the importance of having scratch resistance inside and outside means that, while an outside scratch on underwater equipment is a minor problem (the water will fill the scratch and you won’t be able to tell it’s there), an inner scratch will be very visible, also once underwater. Thus, OCEAN REEF IDMs, the only Full Face Masks with coating on the market, highly reduce the possibility you will ruin and need to swap your visor.


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.If needed, OCEAN REEF has available to purchase a measuring kit.


Check out the FAQ section, the Training and Support videos for some answers to questions that might come to your mind like:

  • How do I equalise an IDM?
  • Why IDM and not simply FFM?
  • Does it fog?
  • How do i clear it from water?
  • What if it leaks?
  • OA situation?

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