Halcyon Symbios Silver System

The Symbios System – Diving Reimagined

The Symbios Silver Handset Computer is more than a dive computer. It is the centerpiece of a connected system that delivers real-time feedback on trim, decompression, and team data – while preparing you optimally through simulation and training before you even enter the water.

The full-color transflective display remains clearly readable even in direct sunlight without backlight – saving battery life in the process. Large, clearly structured digits allow quick information capture even under load, while a simplified main screen keeps the most critical data front and center. Fields, screens, and functions are fully customizable to your preferences.

The intuitive two-button operation works reliably even with gloves. Supported diving modes include Trimix OC, CCR, and adjustable Gradient Factors. The integrated Gradient Factor chart visualizes in real time which tissue compartment is driving your decompression – supporting informed decisions during the dive. The pressure sensor is chlorine-resistant, making it well suited for frequent pool use in training environments.

Through the Halcyon App (Android & iOS), the Symbios can be fully configured before the dive: set up gas tables, adjust settings, customize screen layouts, and simulate dives – including gas switches, failures, and response scenarios. You know exactly how your computer behaves before entering the water. After the dive, logbook, data review, and integrated eCCR pre-dive checks are all available at your fingertips.

Choose the configuration that matches your diving:

Symbios Handset with Accessories The Symbios Silver Handset Computer including accessories – ready to use straight out of the box. Perfect for divers looking for a powerful, fully configurable dive computer with app integration. The pre-programmed gas library saves preparation time and reduces configuration errors. For CCR divers: the Buddy Screen displays your dive partner's pO₂ values and tank pressures directly on your display – particularly valuable for instructors keeping an eye on multiple students at once.

Symbios Handset with Sender Combines the Handset Computer with the Symbios Tank Pod for wireless pressure transmission – no hoses, no additional connections. Add to that the patented Trim Indicator: real-time feedback on your body position and trim underwater, displayed directly on screen. No waiting for the post-dive video debrief – you see instantly where you stand and can correct your position on the spot. Ideal for divers actively working to improve their underwater technique.

Handset with HUD The Silver Handset Computer paired with the Symbios HUD – the smallest and lightest full-feature HUD in the industry. Mounted directly on the mask frame, the HUD projects all essential dive data into your line of sight: depth, time, decompression, gas supply, and more – always visible, without looking away. Both devices are fully synchronized and operate independently of each other. Particularly well suited for underwater photographers, researchers, and anyone diving under high task loading or who needs their hands free.

Symbios Complete Set with Sender and HUD The complete Symbios System: Silver Handset, Tank Pod, and HUD in one package. Wireless pressure transmission, patented real-time Trim Indicator, buddy pO₂ monitoring via the Buddy Screen – and all data simultaneously on your wrist and directly in your line of sight. The Complete Set is the full expression of the Symbios ecosystem and the first choice for technical divers, instructors, and anyone looking to unlock the system's full potential. And this is just the beginning: planned integrations include GPS buoys, DPVs, primary lights, and gas analyzers – the system grows with your needs.