OTS Spectrum Full-Face Buddy Phone Package
Experience the comfort of full-face diving with clear wireless underwater communication. The OTS Spectrum Full-Face Buddy Phone Package combines an OTS Spectrum Full-Face Mask in your selected colour and lens configuration with the advanced OTS Buddy Phone D2 digital transceiver.
The Spectrum lets you adapt a compatible second-stage regulator instead of purchasing a dedicated full-face-mask regulator. Its double-seal silicone skirt, five-point head harness and panoramic tempered-glass visor provide a comfortable, secure fit with excellent underwater visibility.
The Buddy Phone D2 uses Digital Signal Processing and ultrasonic through-water transmission for diver-to-diver or diver-to-surface communication. Its underwater voice menu lets you adjust volume, change channels or activate continuous-transmit mode using the push-to-talk control.
What’s Included
- One OTS Spectrum Full-Face Mask
- Your choice of four mask configurations:
- Black skirt with clear lens
- Black skirt with coated lens
- Blue skirt with clear lens
- Blue skirt with coated lens
- One OTS Buddy Phone D2 digital communication unit
- Integrated ceramic earphone and transducer
- Standard microphone and push-to-talk communication assembly
- Five-point adjustable head harness
- Model: SPT-BUDS-D2
The official package includes an OTS Spectrum Mask Package in the selected configuration and an OTS-BUD-D2 Buddy Phone.
Required to Complete Your Setup
These items are not included and must be purchased separately:
- Compatible second-stage regulator: The Spectrum is designed to accept most standard second stages; a regulator is not supplied with the mask.
- 9V alkaline battery: Required to power the Buddy Phone D2 and not included.
- Anti-fog treatment: OTS recommends applying a suitable mask defog before diving with the Spectrum.
- Complete scuba regulator, cylinder and breathing-gas system.
Recommended Optional Extras
| Optional extra | Benefit |
|---|---|
| OTS Spectrum Ambient Breathing Valve | Lets you breathe surrounding air at the surface, conserving cylinder gas before and after the dive. |
| Second Buddy Phone D2 | Enables wireless communication with another equipped diver. |
| OTS SP-100D2 Surface Station | Provides two-way communication between equipped divers and surface personnel. |
| OTS PowerCom Surface Station | Recommended for professional operations requiring higher-powered diver-to-surface communications. |
| OTS Spectrum Camera Mount | Allows hands-free mounting of a GoPro or similar action camera. |
| Spectrum Universal Light Bracket | Adds a compatible dive light for low-visibility, night or working dives. |
| 360° Swivel or 90° Elbow | Improves low-pressure hose routing and reduces unwanted hose tension. |
| Quick-Disconnect Fitting | Allows the regulator hose to be disconnected more conveniently for setup, cleaning and storage. |
| Replacement Clear or Coated Lens | Lets you change the visor according to diving conditions and personal preference. |
The Spectrum ABV is designed specifically for this mask and is sold separately.
Buddy Phone D2 Features
- Digital Signal Processing for clear speech transmission
- Wireless diver-to-diver and diver-to-surface communication
- Two selectable communication channels
- Three adjustable volume levels
- Audible voice-guided settings menu
- Push-to-talk operation
- Continuous-transmit mode for hands-free speaking
- Compact, mask-mounted design
- Nominal range of 50–500 metres, depending on underwater noise and sea conditions
- Powered by a replaceable 9V alkaline battery
Spectrum Mask Features and Benefits
- Compatible with many standard scuba second-stage regulators
- Eliminates the need to bite down continuously on a mouthpiece
- Reduces jaw fatigue and dry mouth during longer dives
- Double-seal silicone skirt accommodates a wide range of face shapes
- Secure five-point adjustable head harness
- Large tempered-glass visor with an excellent field of view
- Available with clear or coated iridium lens
- Familiar nose-pinching equalisation
- Provides additional facial warmth and protection
- Communication-ready design
- CE certified and tested to EN 250:2014
- Spectrum mask tested to a maximum depth of 50 metres
- Suitable for cold-water applications, subject to the regulator being used
Mask fit and specifications
| Face-fit profile | Double seal designed for a broad range of face shapes; fitting required |
|---|---|
| Lens layout | Single panoramic full-face visor |
| Frame construction | Framed; inner support frame and visor clamps |
| Frame material | Glass-filled Zytel inner frame; black PPS visor clamps |
| Lens treatment | Clear or iridium-coated visor, depending on selected option |
| Anti-fog system | No self-defogging airflow system; use a suitable mask defog |
| Strap material | EPDM / natural-rubber blend |
| Buckle adjustment | Glass-filled Zytel buckles and buckle locks |
| Regulator system | Accepts compatible conventional second stages; installation and fit must follow the OTS manual |
| Communications compatibility | OTS communications port for Buddy Phone or compatible earphone/microphone assembly |
| Equalisation | Pinch the nose through the flexible nose pocket |
| Surface breathing valve | Optional — Spectrum Ambient Breathing Valve sold separately |
| Second stage included | No — compatible second-stage regulator required |
| Communications included | Yes — OTS Buddy Phone D2 digital transceiver |
| Water drainage | Chin drain tab and internal visor drain openings |
| Mask-only depth specification | Mask tested to 50 m; observe the lowest rating of the complete setup |
| Cold-water suitability | Mask suitable below 10°C; cold-water performance depends on the fitted second stage |
Buddy Phone D2 Specifications
| Specification | Details |
|---|---|
| Model | SPT-BUDS-D2 |
| Nominal range | 50–500 metres, depending on conditions and noise |
| Transmission | Ultrasound using upper single sideband |
| Output power | 0.5 watts PEP |
| Frequency A | 32.768 kHz USB |
| Frequency B | 31.250 kHz USB |
| Audio bandwidth | 300–3,000 Hz |
| Automatic gain control | Greater than 80 dB |
| Earphone | Ceramic |
| Transducer | Ceramic cylinder |
| Battery | 9V alkaline—sold separately |
| Maximum Buddy Phone depth | 130 fsw, approximately 40 metres |
| Buddy Phone weight in air | 8.1 oz, approximately 230 g |
Important: Although the Spectrum mask is tested to 50 metres, the Buddy Phone D2 has a maximum operating depth of 130 feet—approximately 40 metres. When using the complete communication package, always observe the shallower rating of the installed components.

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