OTS Spectrum Full-Face Mask
The OTS Spectrum lets you build a full-face diving setup around a compatible conventional second-stage regulator. Its panoramic tempered-glass visor, double-seal silicone skirt and five-point harness provide the mask assembly, while a flexible nose pocket allows nose access for equalisation. Compatible OTS communication equipment can be added separately. The regulator must be chosen, installed and checked according to the OTS manual.
Features and benefits
- Compatible regulator installation: Accepts suitable conventional second stages; check your exact model and installation.
- Tempered-glass visor: Choose the clear or coated configuration shown.
- Double-seal silicone skirt: Provides flexible facial contact.
- Five-point harness: Allows controlled adjustment.
- Flexible nose pocket: Allows nose pinching for equalisation.
Size and fit
Have the mask and breathing system fitted together. Check the seal, harness, equalisation and emergency procedures with appropriate training. Follow the operating limits of the complete system and model manual.
Fit the complete system to the manufacturer’s instructions, including the regulator connection and any communication equipment. Follow the full-face-mask manual and your training for checks and operating limits.
What’s included
One Spectrum mask with five-point harness in the selected configuration. A compatible regulator and the optional Ambient Breathing Valve are not included. Communication equipment is sold separately.
Technical Specs
| Brand | OTS |
|---|---|
| Model | Spectrum (920036 series) |
| Face fit guide | Double seal designed for a broad range of face shapes; fitting required |
| Lens layout | Single panoramic full-face visor |
| Frame type | Framed; inner support frame and visor clamps |
| Frame material | Glass-filled Zytel inner frame; black PPS visor clamps |
| Lens material | Tempered glass |
| Lens treatment | Clear or iridium-coated visor, depending on selected option |
| Fog management | No self-defogging airflow system; use a suitable mask defog |
| Skirt material | Silicone |
| Skirt design | Double sealing surface |
| Strap type | Adjustable five-point head harness |
| Strap material | EPDM / natural-rubber blend |
| Buckles | Glass-filled Zytel buckles and buckle locks |
| Intended use | Full-face scuba diving with a compatible breathing system and appropriate training. |
| Regulator system | Accepts compatible conventional second stages; installation and fit must follow the OTS manual |
| Equalisation | Pinch the nose through the flexible nose pocket |
| Surface breathing valve | Optional — Spectrum Ambient Breathing Valve sold separately |
| Regulator included | No — compatible second-stage regulator required |
| Communications included | No — communications equipment is separate |
| Drainage | Chin drain tab and internal visor drain openings |
| Mask-only test depth | Mask tested to 50 m; observe the lowest rating of the complete setup |
| Cold-water guidance | Mask suitable below 10°C; cold-water performance depends on the fitted second stage |
| Country of manufacture | Not specified in the checked exact-model information |
| Included | One Spectrum mask with five-point harness in the selected configuration. A compatible regulator and the optional Ambient Breathing Valve are not included. Communication equipment is sold separately. |
Care and storage
Rinse the mask in fresh water after every outing, flushing salt and grit from the skirt, strap and buckles. Use mild liquid soap only where the mask manufacturer allows it, then rinse thoroughly. Dry in the shade and store with the lens protected and the skirt relaxed. Check the strap and sealing edge before use. Avoid abrasives, toothpaste and flame treatments.
Follow the model manual for rinsing and any permitted mild-detergent cleaning of the mask. Clean the regulator and communication equipment separately using their own instructions; do not soak the complete breathing or electronic assembly in neoprene cleaner. Protect polycarbonate visors from solvents and scratching, and use only an approved visor-compatible defog. Have scheduled regulator maintenance completed by an appropriately qualified technician.
For a separate neoprene strap cover, if you use one, we recommend Cressi Neoclean Wetsuit Wash or Revivex Wetsuit Shampoo to clean compatible neoprene. Wash that component separately according to its care label and the cleaner’s dilution instructions, then rinse thoroughly and dry in the shade. These neoprene cleaners are not a recommendation for the mask lens or a regulator assembly.
Compare more diving masks or contact our Hallam team for help choosing the right fit.




















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