Halcyon Symbios HUD Computer
Halcyon Symbios HUD Computer
Halcyon Symbios HUD Computer
Symbio HUD Front Screen View
Diver using Halcyon HUD on diving mask
Halcyon Symbios HUD Computer screen
Halcyon Symbios HUD Computer
Symbios HUD text on drawn images of HUD
Halcyon Symbios HUD Computer
Halcyon Symbios HUD on Mask

Halcyon Symbios HUD Computer

£1,035.00

Dispatched 1 to 2 days

The Halcyon Symbios HUD is a complete hands-free 5-gas dive computer and part of the connected Symbios ecosystem. It can be used independently as a standalone mask-mounted computer or integrated with Symbios Handset computers, the Tank Pod and other compatible Symbios components. Supporting Open Circuit, fixed or integrated CCR, integrated sidemount and buddy screen functionality, it offers up to 12 hours runtime across five brightness levels with a 120m depth rating.

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Halcyon Symbios HUD:
A Complete Dive Computer in Your Line of Sight

The Halcyon Symbios HUD is a full-function 5-gas dive computer that can be used independently as a standalone mask-mounted computer, or integrated with other components in the connected Halcyon Symbios ecosystem.

Mounted to the mask frame, the HUD keeps information stable and consistently visible without having to check a wrist-mounted computer. This can reduce task loading during complex dives, gas sharing, bailout, photography, videography, survey work or any situation where hands-free access to data is valuable.

Compact, lightweight, and highly advanced, the Symbios HUD supports open-circuit, fixed or integrated CCR, integrated sidemount, gauge, and buddy-screen functionality. It is suited to recreational, advanced, technical, expedition, rebreather, professional and underwater imaging divers who want important data clearly visible throughout the dive.

Halcyon Symbios HUD at a Glance:

  • Smallest and lightest full-feature HUD in the industry
  • Full-function dive computer mounted directly on the mask for hands-free, always-visible dive information
  • Symbios Wireless Ecosystem – The Symbios Handset can receive wireless data from multiple sources, including Tank Pods, rebreathers, DPVs, GPS buoys, dive lights, and more
  • Gradient Factor Chart – Delivers real-time visualization of compartment supersaturation and provides deeper insight into decompression obligations and decompression stress
  • Patented Trim Indicator – Provides accurate, real-time feedback on diver trim and body position for optimal underwater efficiency and control (requires a Symbios Tank Pod)
  • Patented Trim Indicator – Provides accurate, real-time feedback on diver trim and body position for optimal underwater efficiency and control (requires a Symbios Tank Pod)
  • Training Mode – Allows divers to train decompression schedules, precise stop-depth control, and gas-switch procedures in a safe environment without actual decompression obligations
  • Full Integration with the Symbios App (Android & iOS)
    • Dive computer setup (settings, gas tables, etc.)
    • Dive simulation
    • Dive data download and logbook
    • Integrated eCCR pre-dive checks
    • Social platform
  • Buddy Screen – Displays pO₂ values and tank pressures from your buddy's Symbios eCCR. Particularly valuable for instructors, allowing them to monitor both their own and their students' eCCR data on a single device.
  • Full-Color Transflective Screen – Perfectly readable in bright sunlight, even without backlight
  • Near-Eye Dive Computer – Mounted directly on the diving mask for hands-free access to critical dive information
  • High-Resolution Full-Color Display
  • Large Virtual Image – Approximately 30 × 30 cm at a virtual viewing distance of 1 meter for easy readability
  • Pre-Programmed Gas Library
  • Intuitive Two-Button Operation
  • Extensive Customisation – Customisable fields, screens, and functions
  • Supports Trimix OC, CCR, and Adjustable Gradient Factors

The Symbios HUD can be used on its own, with the Symbios Handset Dive Computer, with the Symbios Tank Pod, or as part of a Complete Symbios Set consisting of the Handset, Tank Pod and HUD.

You can also purchase the Symbios HUD and Tank Pod Set.

Halcyon Symbios HUD Features & Specifications

  • Best Suited For: Divers looking for a compact, hands-free, scalable dive computer within the Symbios ecosystem
  • Dive Modes: Multi-gas, open circuit, fixed CCR, integrated CCR, integrated sidemount, gauge and buddy screen
  • Number of Gases: 5 OC/CC
  • Algorithm: Bühlmann ZHL16-C with adjustable gradient factors
  • Screen Resolution: 240 x 240
  • Display Type: TFT full-colour micro-display
  • Display Size: Virtual image of approximately 20 x 20 cm at 70 cm distance
  • Battery Type: Rechargeable Li-ion battery
  • Battery Life: Up to 12 hours with five brightness levels
  • Dive Log Capacity: 1000 hours at 5-second sampling rate
  • Depth Rating: 120 metres
  • Air Integration: Optional Symbios Tank Pod with gas pressure monitoring and built-in trim sensor
  • Number of Transmitters Supported: Up to 7
  • Bluetooth: Yes
  • Interface: Two tactile-response buttons
  • Compass: 3-axis tilt-compensated digital compass with digital and rose formats
  • Firmware Updates: Yes, via the Halcyon app
  • Current Languages: English, German, Korean and Chinese
  • Mounting: Mask clamp
  • Accessories Included: Symbios charging cable
  • Dimensions: 68.3 x 62.5 x 36.1 mm

Multi-Gas, Trimix, CCR and Sidemount Capability

The Symbios HUD uses the Bühlmann ZHL16-C algorithm with adjustable gradient factors. It can accommodate up to five gases for open-circuit diving, fixed or integrated CCR, integrated sidemount and gauge modes.

Depth-rated to 120 metres, the HUD operates on a rechargeable Li-ion battery and provides up to 12 hours of runtime across five brightness levels. It can display key dive information including CNS, OTO accumulation, CO2 data where available, gradient factor information and normal maximum average values for the dive.

Large, Clear Near-Eye Display

The Symbios HUD uses a full-colour micro-display to create a large, easy-to-read virtual image in front of the diver. This allows critical information to be read quickly at a glance, without needing to adjust position or shift attention away from the dive.

The display is designed to remain stable and readable while moving, working, filming, handling equipment or managing more demanding dive situations.

Download the Symbios Brochure for more details.

Wireless Technology, CCR Integration and Team Awareness

With advanced Symbios wireless technology, the HUD can receive data from compatible connected sources including the Symbios Tank Pod, rebreathers, DPVs, GPS or positioning systems, trim sensors and other supported Symbios-enabled devices.

  • From the Symbios Tank Pod: gas pressure and real-time diver orientation / trim feedback
  • From compatible Symbios-connected CCR systems: PO2 values, battery state, CO2, scrubber temperature and other available rebreather data
  • From Symbios-enabled products: future-ready integration with supported devices such as GPS pods, DPVs and other connected equipment

The Symbios HUD can also support team awareness by displaying selected buddy or student data where compatible devices are paired. This is particularly useful for instructors, CCR divers and teams operating in demanding or low-visibility environments.

The HUD also provides wireless CCR integration, helping compatible systems display key rebreather data without additional wired connections or dependencies.

The set fulfils all EMC requirements and is FCC- and CE-compliant.

Please note: This listing is for the Symbios HUD only. The Halcyon Tank Pod and Symbios Handset Dive Computer are optional components unless specifically included in a package.

Halcyon Symbios HUD

Training, Simulation and Halcyon App Support

Halcyon appDownload and register on the Halcyon app to configure your Symbios HUD, manage settings, update firmware, download dive data and access logbook features.

App Store - https://s.mtrbio.com/kaqbvogopq
Play Store - https://s.mtrbio.com/ojpvmugmsl

Device Setup and Customisation
Customise settings, manage gas libraries and adjust screen layouts before entering the water.

Dive Simulation
Use the app to simulate dives, gas switches, decompression schedules and procedures before the dive.

Logbook and Firmware Updates
Download dive data, manage your logbook and keep your Symbios HUD updated as the ecosystem develops.

The Halcyon Symbios Video - A New Ecosystem

Why Choose DirDirect?

  • Pioneering Halcyon in the UK: For nearly 25 years, we have been the UK's leading Halcyon dealer, with extensive experience in configuring Halcyon dive systems and technical equipment.
  • Extensive Halcyon Inventory: Visit our dedicated technical diving and Halcyon showroom at our physical store to explore one of the UK's largest in-stock selections of world-leading diving products.
  • Specialist Equipment Knowledge: Our commitment to Halcyon reflects a shared focus on robust equipment, careful configuration and practical diving experience across recreational, advanced and technical diving.

Answers to common questions about this product, including sizing, compatibility, and usage.

Product FAQs

What is the Halcyon Symbios HUD?
The Halcyon Symbios HUD is a complete mask-mounted dive computer that displays important dive information directly in the diver’s line of sight. Unlike a simple external display, the Symbios HUD can operate independently as a standalone dive computer or as part of the wider Halcyon Symbios ecosystem, alongside the Symbios Handset, Tank Pod, and compatible connected devices.
Does the Halcyon Symbios HUD need the Symbios Handset Dive Computer to work?
No. The Symbios HUD is a fully functional dive computer and does not require the Symbios Handset to operate. It can be used on its own for open-circuit, Trimix, CCR, sidemount and gauge diving, or combined with the Symbios Handset and other ecosystem components for a more integrated setup.
What are the advantages of using a HUD dive computer?
A Head-Up Display dive computer allows divers to monitor information without looking down at a wrist-mounted device. The Symbios HUD keeps critical dive data continuously visible, which can reduce task loading during technical dives, CCR diving, photography, videography, equipment handling, training and demanding underwater situations.
Does the Halcyon Symbios HUD work with the Tank Pod?
Yes. It is part of the Symbios ecosystem. When paired with the Halcyon Symbios Tank Pod, the HUD can display wireless cylinder pressure information and provide real-time diver trim feedback. The Tank Pod adds gas monitoring and body position awareness while keeping information directly in the diver’s field of view.
Can the Halcyon Symbios HUD be used for CCR diving?
Yes. The Symbios HUD supports fixed and integrated CCR diving. When used with compatible Symbios-connected rebreather systems, it can provide wireless access to important CCR information, such as PO₂ values and other available system data, directly on the HUD display.
What dive modes and gases does the Halcyon Symbios HUD support?
The Symbios HUD supports open circuit, Trimix, fixed CCR, integrated CCR, integrated sidemount and gauge modes. It uses the Bühlmann ZHL16-C algorithm with adjustable gradient factors and supports up to five OC/CC gases.
Can I set up and update the Symbios HUD through the Halcyon app?
Yes. The Halcyon app allows divers to configure the Symbios HUD, manage gas settings, customise preferences, download dive data, update firmware and simulate dives before entering the water. The app is an important part of the connected Symbios ecosystem.
SKU: 13.001.003