The Halcyon Symbios BLUE Handset Computer is proof that you don’t need to go “full flagship” to get exceptional performance, reliability and future-ready technology. Designed as a streamlined version of Halcyon’s top-tier Symbios handset, the Symbios BLUE delivers the same core DNA divers expect from Halcyon — precision, clarity and durability — while keeping things refreshingly approachable in both size and price.
This is a serious dive computer for divers who demand more than the basics. Whether you’re an advanced recreational diver stepping into mixed gas, a technical diver in training, or a CCR diver looking for a dependable fixed-setpoint handset or backup, the Symbios BLUE fits effortlessly into your progression.
Compact, rugged and brilliantly capable, it’s built to grow with you — not limit you.
A Compact Powerhouse for Recreational & Technical Divers
At first glance, the Symbios BLUE impresses with its clean, purposeful design. Underwater, it really comes alive.
The 2.4” high-resolution transflective full-colour display is a standout feature. Transflective technology means the screen uses ambient light to improve visibility rather than fight it — delivering crisp, high-contrast readability in bright shallows and dark technical environments, without excessive battery drain.
This large screen dive computer presents essential information clearly and calmly, exactly when you need it. No clutter. No confusion. Just clean data delivery in all conditions.
Supporting oxygen, nitrox (EANx) and trimix, alongside open-circuit and Fixed Setpoint CCR modes, the Symbios BLUE adapts seamlessly as your diving evolves — from advanced recreational profiles through to demanding tech dives.
At its core runs the trusted Bühlmann ZH-L16C algorithm, paired with fully customisable gradient factors, giving technical and advanced divers the control and precision they rely on.
Built on Halcyon’s Symbios™ Technology Platform
One of the most compelling aspects of the Halcyon Symbios BLUE Handset Computer is that it isn’t a standalone device — it’s part of a modular, expandable ecosystem.
Halcyon designed Symbios™ technology to support divers not just today, but years down the line. As your diving changes, your computer doesn’t become obsolete — it grows with you.
The Symbios BLUE integrates seamlessly with:
- Symbios GPS Pod – Surface GPS positioning for dive site tracking and logging
- Symbios DPV Interface – Scooter telemetry integration for DPV divers
- Symbios Tank Pod – Wireless tank pressure monitoring
- Future Symbios Accessories – Fully expandable as new technology is released
This ecosystem approach makes the Symbios BLUE a smart investment for divers who value longevity and adaptability.
Key Features & Benefits at a Glance
The Symbios BLUE balances advanced functionality with intuitive operation. Here’s what makes it stand out in real-world diving:
Full Multi-Gas Capability
Supports oxygen, nitrox and trimix, making it suitable for advanced recreational diving, staged decompression and technical profiles.
CCR-Ready (Fixed Setpoint)
Includes Fixed Setpoint CCR mode, ideal for CCR divers or as a reliable backup handset.
(Note: does not connect to wireless rebreathers.)
Brilliant Transflective Colour Display
- 2.4” full-colour screen
- 320 × 240 px resolution
- Exceptional readability in all lighting conditions
Long-Lasting Rechargeable Battery
The integrated Li-ion rechargeable battery delivers up to 30 hours of dive time on a single charge — perfect for dive trips, liveaboards and extended training weekends.
Advanced Dive Tracking
- Stores up to 1,000 hours of dive logs
- 5-second sampling rate ensures accurate profile recording
Robust & Travel-Ready
Rated to 120 metres, the Symbios BLUE features a compact, rugged housing built for demanding environments — from cold water tech diving to warm-water expeditions.
Intuitive 2-Button Interface
Simple, tactile buttons make navigation easy, even with thick gloves. Less time fiddling with menus, more time focusing on the dive.
Enhanced Awareness Tools
- Vibration alerts for critical notifications
- 3-axis digital compass for accurate underwater navigation
The Halcyon Symbios Tank Pod: Air Integration Done Right
The Halcyon Symbios Tank Pod adds wireless tank pressure monitoring to the Symbios ecosystem, bringing air integration to your dive setup without compromising reliability.
Paired with the Symbios BLUE, the Tank Pod allows divers to monitor tank pressure directly on their handset, helping with gas management, situational awareness and post-dive analysis.
For divers moving toward air-integrated diving, stage monitoring or simply wanting cleaner hose routing, the Symbios Tank Pod offers a seamless and future-ready solution — fully aligned with Halcyon’s modular design philosophy.
Seamless Connectivity with the Halcyon App
Using the Halcyon App, divers can sync their Symbios BLUE to:
- Manage dive settings
- Review detailed dive logs
- Track performance metrics
- Analyse depth, time and decompression data
This makes post-dive review intuitive and useful — whether you’re logging recreational dives or analysing technical profiles.
Symbios BLUE vs Flagship Symbios: What’s the Difference?
The Symbios BLUE Handset delivers the same intelligent design philosophy and feature-rich Symbios™ ecosystem as Halcyon’s flagship Silver handset — with one deliberate distinction: no wireless CCR integration.
By removing wireless CCR connectivity, Halcyon has created a more accessible entry point into the Symbios platform, without compromising on performance, clarity, durability or future expandability for the vast majority of divers.
| FEATURE | SYMBIOS “SILVER” HANDSET COMPUTER | SYMBIOS “BLUE” HANDSET COMPUTER |
| DISPLAY | 2.4” transflective full-color, 320×240 px | 2.4” transflective full-color, 320×240 px |
| CONNECTIVITY | Wireless compatibility with all SymbiosTM enabled systems including Wireless Rebreathers, CCR POD, Tank Pod, App, GPS Pod, DPV, Symbios Chest-mount CCR, and more | Wireless compatibility with SymbiosTM Tank Pod, App, GPS Pod, DPV, and more. Does not connect to wireless rebreathers or CCR POD |
| DIVE MODES | OC, CCR (integrated), CCR Wireless, CCR Fixed Setpoint, Sidemount, Gauge, Buddy Screen, Large-format | OC, CCR Fixed Setpoint, Sidemount, Gauge, Buddy Screen, Large-format |
| ALGORITHM | Bühlmann ZH-L16C with gradient factors | Bühlmann ZH-L16C with gradient factors |
| GAS SUPPORT | Up to 5 gases (OC / CC) | Up to 5 gases (OC / CC) |
| REBREATHER INTEGRATION | Connects wirelessly to the Symbios Rebreather, CCR POD, and Symbios-enabled Rebreathers | Does not connect wirelessly to CCR systems (FSP mode only). No upgrade to wireless CCR is possible. |
| BATTERY & LOG | Rechargeable Li-ion, ~30 h battery life, 1000h log (5s rate) | Rechargeable Li-ion, ~30 h battery life, 1000h log (5s rate) |
| DEPTH RATING | 120 m / 394 ft | 120 m / 394 ft |
| ALERTS & INTERFACE | Vibration alerts, tactile-response buttons, 3-axis compass, Bluetooth | Vibration alerts, tactile-response buttons, 3-axis compass, Bluetooth |
Who Is the Halcyon Symbios BLUE Best For?
The Halcyon Symbios BLUE Handset Computer is an excellent choice for:
- Advanced recreational divers using nitrox or progressing toward trimix
- Technical divers in training
- Fixed-setpoint CCR divers
- Professionals seeking a high-quality backup dive computer
- Eco-conscious divers who prefer rechargeable devices
- Divers who want Halcyon performance at a more accessible price
If you’re looking for a large screen dive computer that feels premium, performs flawlessly and won’t hold you back as your diving evolves — this is it.
What’s Included
Every Symbios BLUE Handset Computer comes with:
- Symbios BLUE Handset
- Bungee Mount
- Charging Cable
- Protective Screen
Everything you need to get diving, straight out of the box.
Why Choose the Halcyon Symbios BLUE Handset Computer?
Halcyon has built its reputation on precision engineering, diver-focused design and uncompromising reliability — and the Symbios BLUE is no exception.
It offers:
- Advanced multi-gas and CCR capability
- A bright, efficient large screen display
- Customisable decompression modelling
- Air integration potential via the Symbios Tank Pod
- Full compatibility with the Symbios technology ecosystem
All wrapped in a compact, rugged package that’s easy to travel with and a pleasure to dive.
Streamlined. Smart. Symbios.
This is Halcyon technology, refined and made accessible — without cutting corners.
FAQs
Is the Halcyon
Symbios BLUE suitable for technical diving?
Yes. The Symbios BLUE supports trimix, custom gradient factors and advanced decompression profiles, making it well-suited for tech diving and training.
Does the
Symbios BLUE support air integration?
Yes, via the Halcyon Symbios Tank Pod, which provides wireless tank pressure monitoring.
Can I use the
Symbios BLUE for CCR diving?
Yes. It includes Fixed Setpoint CCR mode, making it suitable for CCR divers or as a backup handset.
How long does the battery last?
The rechargeable Li-ion battery provides up to 30 hours of dive time per charge.
Is the
Symbios BLUE future-proof?
Absolutely. It is fully integrated into the Symbios ecosystem, allowing expansion with GPS, DPV, tank pods and future accessories.
Ready to Dive Smarter?
If you’re looking for a high-performance dive computer that delivers clarity, control and long-term value — without the premium price tag — the Halcyon Symbios BLUE Handset Computer is ready to earn its place on your wrist.
Explore the Symbios BLUE today and upgrade your diving with confidence.
Shop now and experience Halcyon performance on every dive.
Lastly, we’d love to hear about your diving journey so far and what you’re looking for in your own scuba gear. If you have any questions along the way, you’re more than welcome to email us at support@mikesdivestore.com, schedule a video consultation, or drop by our Chiswick store for expert, face-to-face advice.
