OTS Guardian Full-Face Mask
The Guardian incorporates a dedicated second-stage regulator into a full-face mask, allowing breathing through the nose or mouth. Its silicone skirt has a double sealing surface, and the equalising block can be adjusted to suit the wearer.
- Dedicated removable second stage for cleaning and storage; not usable independently of the mask.
- Adjustable equalising block.
- Airflow directed across the visor to help limit fogging.
- Port for compatible OTS communications equipment.
- Ambient Breathing Valve for surface use.
- Mask bag and low-pressure hose included.
Mask fit and specifications
| Face-fit profile | One size designed for a broad range of faces, including smaller faces; fitting required |
|---|---|
| Lens layout | Single panoramic full-face visor |
| Frame construction | Framed; upper and lower visor clamps |
| Frame material | Glass-filled nylon visor frame |
| Lens material | High-strength polycarbonate |
| Anti-fog system | Air is directed across the visor before entering the oral/nasal pocket |
| Prescription lens options | Optional OTS Guardian Eyewear Kit; prescription lenses fitted separately |
| Skirt material | Liquid silicone, 55–60 Shore A |
| Strap design | Adjustable five-point head harness |
| Buckle adjustment | Replaceable nylon buckles on skirt tabs |
| Internal volume | Low volume |
| Regulator system | Dedicated quick-release second stage; cannot be used independently of the mask |
| Communications compatibility | OTS communications port; Buddy Phone or compatible earphone/microphone assembly |
| Equalisation | Adjustable nose block with interchangeable pads |
| Surface breathing valve | Included — Ambient Breathing Valve for surface use |
| Second stage included | Yes — dedicated Guardian second stage |
| Communications included | No — communications equipment is separate |
| Hose connection | Standard low-pressure scuba hose, routed over the right shoulder |
Communications equipment is sold separately. Use requires appropriate full-face-mask training and a compatible breathing system. Follow the OTS manual for fitting, operating limits and maintenance.

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