Halcyon Symbios Handset, HUD & Tank Pod

All in One: The Halcyon Symbios System

The Halcyon Symbios HANDSET, HUD, and Tank POD package offers a comprehensive solution for an innovative, future-proof echo system designed for discerning divers.

Able to accommodate up to 9 transmitters and support 5 OC/CCR gases, the Handset and HUD (Head-Up Display) computers share the same key features but in a different form factor. They can be used together or individually, with the HUD providing a significant hands-free advantage for rebreather divers, photographers, videographers, SAR divers, and Special Forces.

Together with the Symbios Handset, the HUD and handset form the core of Halcyon’s Symbios Technology, an ecosystem designed to enhance your diving experience with advanced features and prepare you for today’s adventures and tomorrow’s challenges.

Symbios Package Highlights:

• Best Suited For: Experienced divers looking for a complete, future-proof dive computer ecosystem with wrist-mounted, hands-free HUD and wireless gas monitoring capabilities for advanced recreational, technical, CCR, and expedition diving.
• Complete Symbios System: Includes the Symbios Handset dive computer, Symbios HUD near-eye display, and Symbios Tank Pod transmitter with integrated trim monitoring.
• Highlights: A fully connected wireless dive system delivering real-time dive data, gas pressure information, decompression status, CCR integration, trim feedback, and hands-free HUD visibility.
• Dive Modes: Supports multi-gas open circuit, sidemount, fixed CCR, integrated CCR, gauge mode, and advanced technical diving applications.
• Wireless Ecosystem: Receives data from up to 9 Tank Pods. With their industry-leading wireless technology, the Symbios Tank Pods allow each unit to receive data from a wide range of sources, including RB, DPV, GPS/Positioning systems, trim, and more.
• Decompression: Bühlmann ZHL16-C algorithm with adjustable Gradient Factors, Gradient Factor Chart visualisation, and support for Trimix OC and CCR diving.
• Hands-Free HUD Display: The industry's smallest and lightest HUD full-colour mask-mounted display provides constant access to essential dive information without needing to check a wrist computer.
• Air Integration & Trim Monitoring: The Symbios Tank Pod provides both wireless gas-pressure monitoring and patented real-time diver-trim feedback.
• Smart Connectivity: Bluetooth connection with the Symbios App for dive setup, simulation, firmware updates, dive log download, and system management.
• Power & Performance: Rechargeable battery technology, high-resolution colour displays, intuitive operation, and extensive customisation across the Symbios platform.
• Easy-read screens: The handset offers clear, bright, and easily readable dive data. The handset's 2.4 "screen provides a 320x240 resolution with a transflective full-colour display that can easily be read even under bright sunlight. The HUD's 240x240 TFT full-colour micro-display gives divers a virtual image of approximately 20 x 20 cm² at a distance of 70 cm.
• User-friendly: Two-button control, customisable fields, screens and functions, vibration alerts, rechargeable batteries.

The Symbios Handset Computer

The Symbios Handset is a multi-gas dive computer utilising the ZHL16-C algorithm with adjustable gradient factors, accommodating up to five gases for Open Circuit diving, fixed or integrated CCR, Integrated Sidemount, and Gauge modes.

Depth-rated to 120 metres, the Symbios operates on a rechargeable Li-ion battery, providing up to 30 hours of runtime with five brightness levels. The unit also displays the normal maximum average for any dive, CO2 levels, CNS and OTO accumulations, and the 

• Dive Modes: Open circuit, Trimix, fixed CCR, integrated CCR, integrated sidemount and gauge modes
• Algorithm: Bühlmann ZHL16-C with adjustable gradient factors and Gradient Factor visualisation
• Gas Support: Up to 5 OC/CC gases with pre-programmed gas library
• Wireless Integration: Supports up to 9 wireless connections, including Symbios Tank Pod and compatible connected devices
• Air Integration: Optional Symbios Tank Pod provides gas pressure monitoring and real-time trim feedback
• CCR Connectivity: Supports compatible Symbios-connected CCR systems with advanced monitoring and buddy screen functionality
• Display: 2.4-inch full-colour transflective screen, 320 x 240 resolution
• Controls: Two tactile-response buttons with customisable screen layouts
• Compass: 3-axis tilt-compensated digital compass with rose display
• Battery: Rechargeable Li-ion battery offering up to 30 hours runtime
• Dive Log: Stores up to 1000 hours of dive data at 5-second sampling
• Connectivity: Bluetooth connection with Halcyon app support, firmware updates, dive simulation and logbook management
• Alerts: Built-in vibration alerts
• Depth Rating: 120 metres
• Languages: English, German, Korean and Chinese
• Included: Blue bungee wrist strap and charging cable
• Dimensions: 94.4 x 63 x 19.8 mm

Read more on our dedicated product page for the Symbios Handset Dive Computer

The Symbios HUD Computer

The Halcyon Symbios HUD dive computer with tank pod is ideal for divers seeking hands-free monitoring via a sophisticated Head-Up Display. It will meet the requirements of expedition, rebreather, professional, and military divers, as well as underwater photographers and videographers.

The Symbios HUD will help any diver concentrate on their dive rather than constantly monitoring a wrist computer and supports up to 9 transmitters.

When mounted to a mask, this HUD is comfortable and lightweight. The clear information is readily available to CCR and Open-Circuit divers without the need to check a handset.

• 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 visualisation 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 with the  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.
• Compass: 3-Axis, tilt-compensated, digital and rose formats
• 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 - 240 x 240 TFT full-colour micro-display resolution with Large Virtual Image – Approximately 30 × 30 cm at a virtual viewing distance of 1 metre 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
• Dive Log Capacity: 5s rate 1000h
• Depth Rating: 120m
• Mounting: Mask clamp
• Accessories: Symbios Charging cable 
  
• Dimensions: 68.3x62.5x36.1 mm3

 Visit the Symbios HUD Computer web page for more detailed information.

Halcyon Symbios Tank Pod

The Halcyon Symbios Tank Pod works in conjunction with the Symbios Handset and Symbios HUD systems, transmitting gas pressure and diver orientation (trim position).

The Halcyon Symbios Tank Pod can be attached directly to a first stage or mounted on a short HP hose with a swivel for greater flexibility.

The tank pod uses a high-resolution digital tank pressure sensor, a 3-axis accelerometer to measure the position of the diver (tilt), and a sophisticated transmission protocol based on a 125 kHz magnetic carrier that allows for high data rates and short transmission packages, helping to avoid data collisions when multiple wireless devices are used simultaneously. It is powered by a user-replaceable CR123 battery.

For more details, visit the Halcyon Symbios Tank Pod page.

Halcyon Symbios Sophisticated Wireless Technology

With industry-leading wireless technology, the Symbios handset and HUD dive computers can receive wide-ranging data from up to 9 transmitters, including sources such as RB, DPV, HP, GPS/ Positioning systems, Trim, and more. 

• From the Symbios Tank POD:
  Diver orientation (trim position) and gas pressure
• From Symbios connected CCRs:
  • Oxygen Levels (PO2 on three cells)
  • Battery charge state, CO2, scrubber temperature, and more
• From Symbios Enabled Products:
  • Diver location from Symbios GPS POD
  • DPV of other device battery levels
  • Runtime, remaining time, battery health, personal performance and/or biometric data

Download the Halcyon App for Comprehensive Support

Download and register on the Halcyon App. Stay ahead of the crowd and dive into something special!
App Store - https://s.mtrbio.com/kaqbvogopq
Play Store - https://s.mtrbio.com/ojpvmugmsl

Community-Driven App
Gain unparalleled control over your device with an app supported by a vibrant user community.

Share and Grow
Dive deeper into your experiences by sharing profiles and tips, all while benefiting from regular app-based firmware updates.

Tailored Experience
You can customise settings based on your user profile, manage gas libraries, and receive personalized support through an integrated chat feature.

Dry-Dive Capability
Test and simulate dives in real-time with your Symbios Handset / HUD before entering the water.

The Halcyon Symbios Video - A New Ecosystem

Why Choose DirDirect?

• Pioneering Halcyon in the UK: For nearly 25 years, we've been the UK's premier Halcyon dealer, leading the way by being the first to import and invest in their dive systems. Our consistent award-winning performance speaks to our deep expertise.
• Extensive Halcyon Inventory: Visit our dedicated technical diving and Halcyon showroom at our physical store to explore the UK's largest in-stock selection of world-leading diving products.
• Shared Diving Philosophy: Our unwavering commitment to Halcyon stems from a shared dedication to cutting-edge technology and the enduring diving ethos they established, which many training agencies are now implementing.