Shearwater Perdix 3 Dive Computer

Best For

• Advanced recreational scuba diving
• Technical and Trimix diving
• Open-circuit decompression diving
• Closed-circuit rebreather diving
• Freediving
• Divers who want expandable multi-transmitter air integration

Key Features

• 2.4-Inch AMOLED Display: Ultra-bright 6.1 cm / 2.4 in full-color display provides a vivid, high-resolution interface.
• Rugged Construction: Armored casing, titanium bezel, toughened glass window, and titanium controls provide protection for demanding diving environments.
• Titanium Piezo-Electric Buttons: Reliable touch controls provide a durable interface without traditional mechanical buttons.
• Bühlmann GF Algorithm: Uses the Bühlmann decompression model with configurable Gradient Factors.
• Full Decompression Support: Supports advanced decompression diving with integrated NDL and decompression planners.
• Trimix Support: Designed for multi-gas open-circuit technical diving including Trimix.
• CCR Support: Includes closed-circuit fixed PPO2 operation with bailout functionality.
• Air Integration: Supports simultaneous connection with up to four compatible wireless gas-pressure transmitters.
• Digital Compass: Three-axis, tilt-compensated digital compass provides underwater navigation capability.
• Vibration Alerts: Strong tactile alerts help notify the diver of important dive information.
• User-Replaceable AA Battery: Runs from a single AA battery, eliminating the need to send the computer away for routine battery replacement.
• High-Speed Bluetooth: Supports dive-log transfers and firmware updates.
• Extensive Dive Logging: Stores approximately 1,000 hours of detailed dive information.
• Highly Customizable: Multiple operating modes and extensive display options allow the Perdix 3 to adapt as a diver's needs become more advanced.

Dive Modes

• Air: Recreational diving using air.
• Nitrox: Recreational enriched-air diving.
• 3 Gas Nitrox: Supports up to three Nitrox gases.
• OC Tec: Multi-gas open-circuit Trimix decompression mode.
• CC/BO: Closed-circuit fixed PPO2 mode with bailout support.
• Gauge: Bottom timer with stopwatch and dive logging.
• Freediving: Configurable sampling rates and alarms for freediving.
• Avelo: Available with a separate unlock code.

Display & Construction

• Display Type: Full-Color AMOLED
• Display Size: 6.1 cm / 2.4 in
• Screen Resolution: 450 x 600
• Lens: Aluminosilicate Toughened Glass Window
• Bezel: Titanium
• Controls: Titanium Piezo-Electric Buttons
• Depth Rating: 260 m / 850 ft

Computer Specifications

• Brand: Shearwater
• Model: Perdix 3
• Product Type: Technical Dive Computer
• Decompression Algorithm: Bühlmann GF
• Air Integration: Up to 4 Wireless Gas-Pressure Transmitters
• Compass: 3-Axis Tilt-Compensated Digital Compass
• Dive Log Capacity: Approx. 1,000 Hours
• Connectivity: High-Speed Bluetooth
• Dimensions: 81 x 71 x 38 mm / 3.2 x 2.8 x 1.5 in
• Weight: 181 g / 6.38 oz

Battery

• Battery Type: Single User-Replaceable AA
• Recommended Battery: Energizer Ultimate Lithium AA
• Approximate Battery Capacity: 5.25 Wh

The Perdix 3 can operate with multiple AA battery chemistries. However, vibration-alert functionality is supported only when using a 1.5V non-rechargeable lithium battery or a compatible 3.7V rechargeable lithium battery.

Approximate Battery Life

• 1.5V Lithium: Up to 60 hours
• 1.5V Alkaline: Up to 40 hours
• 3.6V Saft: Up to 80 hours
• 1.2V NiMH: Up to 30 hours
• 3.7V Rechargeable Li-Ion: Up to 35 hours

Ballistic Nylon Case Specifications

• Dimensions: 130 x 105 x 70 mm / 5.1 x 4.1 x 2.8 in
• Weight: 115 g / 4.06 oz

Air Integration

The Perdix 3 can simultaneously support up to four compatible wireless gas-pressure transmitters, allowing the system to expand from a straightforward recreational configuration into more advanced multi-cylinder diving setups. Wireless transmitters are not listed as included with the dive computer and must be obtained separately unless specifically stated otherwise.

What's Included

• Shearwater Perdix 3 Dive Computer
• 1.5V Energizer Ultimate Lithium AA Battery
• Product Information Guide
• Screen Protector
• Black Double Webbing Strap

Not Included

• Wireless gas-pressure transmitter unless otherwise specified
• Avelo unlock code
• Additional batteries

FAQs

Does the Perdix 3 support air integration?
Yes. The Perdix 3 can simultaneously connect with up to four compatible wireless gas-pressure transmitters.

Are transmitters included?
No transmitters are listed in the supplied package contents. They should be considered separately sold unless your specific package states otherwise.

Can the Perdix 3 be used for technical diving?
Yes. The Perdix 3 provides full decompression support, multi-gas operation, Trimix support, CCR functionality, and dedicated OC Tec and CC/BO modes.

Can I replace the battery myself?
Yes. The Perdix 3 uses a single user-replaceable AA battery.

Does every AA battery support the vibration alerts?
No. Vibration functionality requires either a 1.5V non-rechargeable lithium battery or a compatible 3.7V rechargeable lithium battery.

What battery comes with the Perdix 3?
The computer ships with a 1.5V Energizer Ultimate Lithium AA battery, which is also the recommended battery type.

How deep is the Perdix 3 rated?
It has a depth rating of 260 m / 850 ft.

Does it have a compass?
Yes. The Perdix 3 includes a three-axis, tilt-compensated digital compass.

Does Avelo mode work out of the box?
Avelo mode is listed as requiring a separate unlock code.

Care & Maintenance

Rinse the computer thoroughly with fresh water after diving, especially after exposure to salt water, and allow it to dry before storage. Keep the battery compartment and sealing surfaces clean and inspect the battery compartment O-ring according to Shearwater's instructions when changing batteries. Install batteries using the manufacturer's specified polarity and battery recommendations, and follow Shearwater's instructions for firmware updates, servicing, and long-term storage.

Expert Insight

The Perdix 3 is designed to serve as much more than a first recreational dive computer. Its large AMOLED screen and straightforward interface make it approachable for everyday diving, while four-transmitter air integration, Trimix, decompression, CCR, gauge, and freediving capabilities provide substantial room to grow. The user-replaceable AA battery is also a significant practical advantage for traveling and technical divers who prefer easily sourced power rather than a permanently installed rechargeable battery.