Shearwater Dive Computer Petrel 3 Fischer – Top-Tier Rebreather and Air-Integrated Dive Computer for Technical Divers

The Shearwater Petrel 3 Fischer is the ultimate dive computer for technical and rebreather divers seeking maximum performance, reliability, and visibility. Built around Shearwater’s proven decompression algorithms and engineered for extreme underwater environments, the Petrel 3 Fischer includes a Fischer 103 I/O port for real-time PPO2 monitoring of up to three oxygen sensors—making it an essential tool for CCR divers. Combined with air integration capability and a stunning AMOLED display, this is one of the best dive computers on the market today.

Key Features and Benefits

• Fischer Port for Sensor Integration
  Directly interfaces with 1 to 3 oxygen sensors for accurate PPO2 monitoring on closed-circuit systems.

• Air Integration Ready
  Connects wirelessly to up to 4 transmitters, making it one of the most advanced air integrated dive computers available.

• Bright 2.6” AMOLED Display
  Crisp, vibrant display with 320x240 resolution—visible in all conditions.

• Durable and Rugged
  Built with a titanium bezel, toughened aluminosilicate glass, and a compact, impact-resistant form factor.

• Customizable and Upgradable
  Upgrade firmware, configure multiple dive modes, and access a powerful digital compass and dive planner.

• User-Replaceable AA Battery
  Offers up to 100 hours of dive time on a Saft LS14500 lithium cell—no charging cable needed.

• Strong Vibration Alerts
  Clear haptic feedback keeps you aware of alarms even when you’re fully focused on your dive.

Detailed Description

Whether you're diving deep with trimix or conducting long-duration CCR exploration dives, the Shearwater Petrel 3 Fischer delivers the precision and dependability technical divers rely on. This powerful dive computer supports up to 5 open-circuit and 5 closed-circuit gas mixes and features all major dive modes including OC Rec, OC Tec, CC INT, CC EXT, SCR EXT, and Gauge.

Its 2.6-inch AMOLED screen is protected by toughened aluminosilicate glass and designed for maximum readability in dark caves, cold wrecks, and deep water. Strong vibration alarms cut through ambient noise, letting you focus on the dive while remaining informed of critical alerts.

As one of the best dive computers in the technical diving world, the Petrel 3 Fischer supports full air integration with multiple transmitters and comes equipped with Bluetooth for seamless log transfer and updates. Whether you’re logging simple nitrox dives or advanced CCR missions, it gives you the confidence and clarity to execute your dives with precision.

Specifications

• Dive Modes: OC Rec, OC Tec, CC INT, CC EXT, SCR EXT, Gauge

• Display: 2.6” AMOLED, 320x240 pixels

• Bezel: Titanium

• Glass: Toughened aluminosilicate

• Battery: Single AA (Alkaline, Lithium 1.5V, or Saft LS14500)

• Battery Life: Up to 100 hours (Saft)

• Depth Rating: 290m / 950ft

• Gases: 5 OC / 5 CC

• Air Integration: Up to 4 transmitters

• Digital Compass: 3-axis tilt-compensated

• Dimensions: 83 x 75.5 x 39 mm

• Weight: 285g

• Dive Log Memory: ~1000 hours

• Connectivity: Bluetooth LE

• Firmware: User upgradeable

If you’re looking for the best dive computer for demanding exploration or rebreather diving, the Shearwater Petrel 3 Fischer stands at the top. Trusted by professionals and expedition divers worldwide, this air integrated dive computer is built to perform when it matters most. Add it to your kit today and dive with the clarity, control, and confidence that Shearwater delivers.