The Big-Screen Technical Dive Computer
The Shearwater Petrel 3 pairs Shearwater’s trusted technical capability with the largest, brightest display in the open-circuit/rebreather lineup. If you want maximum readability of your decompression data at depth, the Petrel 3 delivers.
Large, Brilliant Display
- Big, vivid AMOLED display with impact-resistant toughened aluminosilicate glass for outstanding clarity and contrast.
- Standard AA battery power for easy field swaps, with no proprietary charging needed.
- Generous dive-log capacity for serious divers and expeditions.
- Vibration alerts, color-coded notifications, and customizable alarms keep critical information impossible to miss.
- Bluetooth with free Shearwater Cloud software for downloads and firmware updates.
Standalone or Hardwired to Your Rebreather
Choose the configuration that matches your diving:
- Standalone — the classic wrist-mounted Petrel 3 for open-circuit and bailout use.
- Fischer — a hardwired Fischer connector to integrate with a compatible rebreather’s cells.
- DiveCAN Monitor (4-pin) — connects to a DiveCAN bus for full rebreather monitoring.
Air Integration for Up to Four Transmitters
The Petrel 3 connects wirelessly to up to four Swift transmitters. Add any mix of Swift and Swift GPS transmitters above to track tank pressure and gas time remaining (GTR) across back gas, stages, and deco bottles — the GPS model also logs surface entry/exit positions.
A Computer for Serious Diving
With full open-circuit recreational and technical (trimix) modes, closed-circuit/bailout support, and the choice of Bühlmann ZHL-16C + GF or VPM-B algorithms, the Petrel 3 is built for advanced and technical divers, rebreather divers, and instructors who want a large, unambiguous display.