Halcyon Symbios Blue Dive Computer

Halcyon Symbios Blue Handset Dive Computer

The Halcyon Symbios Blue Handset is a compact, ultra-slim dive computer designed for recreational, technical, sidemount and fixed setpoint CCR diving. Built around a 2.4" full-colour transflective display, it remains readable in bright conditions without relying on high screen brightness, helping extend battery efficiency. The layout is designed for quick recognition underwater, with a simplified main screen, additional data pages and customizable display fields to match your diving preferences.

The Symbios Blue supports oxygen, nitrox and trimix, using the Bühlmann ZHL-16C algorithm with adjustable gradient factors. It provides decompression awareness with a Gradient Factor chart, leading tissue compartment display and real-time decompression progression. The computer connects via Bluetooth to the Halcyon app for settings, dive management and simulation, allowing divers to train gas switches, simulate profiles and prepare procedures before entering the water. It is also compatible with the Symbios ecosystem, including tank pods and future integrations.

Main Features

• Ultra-slim, glove-friendly handset dive computer
• 2.4" transflective full-colour display
• Display resolution: 320 × 240 px
• Readable in bright conditions without high brightness
• Customizable display fields and additional data pages
• Supports oxygen, nitrox and trimix
• Modes include open circuit and fixed setpoint CCR
• Algorithm: Bühlmann ZHL-16C with adjustable gradient factors
• Gradient Factor chart with visual decompression tracking
• Displays leading tissue compartment and decompression progression
• Bluetooth connection to the Halcyon app
• App supports settings, dive management and simulation
• Simulate dives, gas switches and scenarios before diving
• Compatible with the Symbios ecosystem, including tank pods
• Optional trim monitoring via tank pod
• Rechargeable Li-ion battery, up to 30 hours
• 1000-hour dive log memory
• Depth rating: 120 m
• 2-button interface with tactile feedback
• Vibration alerts
• Digital compass
• Handset price includes: hand computer, 1 bungee rubber and 1 charging cable

Summary

The Halcyon Symbios Blue Handset Dive Computer is a powerful and adaptable dive computer for divers who want clear information, advanced decompression control and modern wireless dive management. With trimix support, fixed setpoint CCR mode, Bühlmann ZHL-16C with adjustable gradient factors, app-based simulation and a readable transflective colour display, it is well suited to divers progressing from recreational profiles into more advanced technical configurations.

Symbios Handset Price includes: hand computer, 1 bungee rubber, 1 charging cable