Ocean Reef Neptune III ID250 Full-Face Diving System (Limited Edition)
In stock — ships from Irvine, CA
Ocean Reef Neptune III ID250 Full-Face Diving System (Limited Edition) - 1st stage SL 35 TX INT 232 Bar / S/M is backordered and will ship as soon as it is back in stock.
Pickup available at 23D
Usually ready in 2-4 days
Ocean Reef Neptune III ID250 Full-Face Diving System (Limited Edition) - 1st stage SL 35 TX INT 232 Bar / S/M is backordered and will ship as soon as it is back in stock.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Product Information
The Neptune III ID250 is a full-face diving mask with an integrated vertical body‑balanced regulator that supports natural breathing and reduces jaw fatigue.
The system includes a transparent polycarbonate visor, silicone oral‑nasal pocket, a patented 3D equalization device, and selectable INT or DIN first‑stage configurations for varied tank setups.
Designed for dive teams, the ID250 is communication‑ready and uses a controlled air‑circulation system to minimise fogging while maintaining an expanded field of vision.
- Integrated vertical body‑balanced second‑stage regulator
- Transparent polycarbonate visor with siloxane resin coating
- Silicone oral‑nasal pocket and patented bellows face seal
- 3D equalization system with adjustable nasal plugs
- First‑stage options: INT 232 Bar or DIN 300
- Communication‑ready design compatible with Ocean Reef comms
- Extender kit and purpose‑built backpack included
| Materials | Visor: Transparent polycarbonate; Seal and oral‑nasal pocket: Silicone; Frame and harness: composite materials |
| Visor Finish | Both sides coated with siloxane resin for improved scratch and chemical resistance; STANAG 4296 impact tested (steel ball at 335 mph) |
| Face Seal | Patented bellows double 'S' spring‑profile skirt for a floating effect and comfort |
| Regulator Type | Integrated vertical, body‑balanced second stage; cold‑water CE certified for full‑face use |
| Equalization System | Patented 3D internal device with up/down, wide/narrow, close/far adjustment to close nostrils for equalization |
| First Stage Configurations | SL 35 TX available in INT (232 Bar) or DIN (300) with anti‑freeze kit; 2 HP ports (7/16‑20 UNF) and 4 MP ports (3/8‑24 UNF) |
| Performance | Static intermediate pressure ~138–142 psi; approximate flow rate 4800 l/min at 140 bar |
| Package Contents | Neptune III mask w/integrated regulator, doffing handle, surface air valve, extender kit, SL 35 TX first stage (INT or DIN), standard hose, Neptune III backpack, multitool |
- Neptune III Diving Mask w/integrated Second stage regulator
- Doffing Handle
- Surface Air Valve
- Extender Kit
- 1st Stage SL 35 TX (choose INT or DIN configuration)
- Standard Hose
- Neptune III Backpack
- Multitool
⚠️ 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.

















