Shearwater Perdix 2 Dive Computer Review [2025]
The Shearwater Perdix 2 is positioned as the best dive computer available in 2025. This review highlights a device that combines “easy to use” functionality with “full tech features” suitable for both beginners and advanced rebreather divers.
Quick Specs
| Feature | Specification |
|---|---|
| Display | 2.2” Color LED |
| Price | ~$1,200 |
| Air Integration | Yes (optional transmitter) |
| Battery Life | 40-100 hours (AA battery) |
| Depth Rating | 200m / 660ft |
| Form Factor | Slate-style |
| Compass | Yes, digital |
| Dive Log Storage | 1,000 hours |
Overview
The Shearwater Perdix 2 is the choice of technical divers, underwater photographers, and dive professionals worldwide. It offers the largest screen in Shearwater’s lineup with the longest battery life.
Purchase Options:
- Shearwater Perdix 2 on Amazon
- Alternative Amazon Link
- View Reviews on Amazon
- Shearwater Swift Transmitter
Key Strengths
Display Quality
A large 2.2-inch color LED screen that’s “bright and easy to read underwater” with excellent contrast. The Perdix 2 offers the best underwater visibility of any Shearwater computer.
User Interface
Described as having “intuitive navigation” with a simple two-button system that’s easy to learn and use even with thick gloves.
Battery Life
Approximately 40-100 hours per AA battery depending on air integration settings. User-replaceable batteries mean you’re never without power on a dive trip.
Durability
- Titanium bezel construction
- Strengthened aluminosilicate glass
- Built to withstand professional use
Air Integration
Optional with the Shearwater Swift transmitter. Displays real-time tank pressure and remaining air time calculations.
Technical Capabilities
- Supports multiple tanks
- Trimix compatible
- Rebreather modes available
- Full CCR integration
Longevity
No planned obsolescence - older models like the Perdix AI from 2017 still receive firmware updates in 2025.
Notable Limitations
- Not watch-style - larger form factor not ideal for continuous wearing
- Bungee cord and clips rather than conventional straps
- Premium pricing includes features not all users will utilize
Dive Algorithm
The Perdix 2 uses the Buhlmann ZHL16-C with Gradient Factors algorithm, offering customizable conservatism levels. The device “won’t lock you out” like some competitors, giving divers more control over their profiles.
Safety Stop Feature
The reviewer emphasizes that safety stops function intuitively - you can maintain the stop countdown while moving slightly, with the timer pausing only if depth deviates significantly. This prevents frustrating resets common on other devices.
Connectivity
The Shearwater smartphone app enables:
- Dive data downloading
- Firmware updates via Bluetooth
- Dive log management
- Custom display configuration
The app is described as “okay” compared to the excellent computer interface, but functional for all essential tasks.
Competitor Comparisons
Perdix 2 vs Perdix AI (Original)
| Feature | Perdix 2 | Perdix AI |
|---|---|---|
| Display | Brighter, higher contrast | Good |
| Battery | Same AA | Same AA |
| Features | Updated algorithms | Original |
| Support | Full firmware updates | Full firmware updates |
Verdict: Upgrade to Perdix 2 for improved display. Original Perdix AI still excellent.
Perdix 2 vs Shearwater Teric
| Feature | Perdix 2 | Teric |
|---|---|---|
| Screen Size | 2.2” | 1.39” |
| Form Factor | Slate | Watch |
| Battery | AA replaceable | Rechargeable |
| Wearable | No | Yes |
Verdict: Choose Perdix 2 for maximum screen size. Choose Teric for everyday wear.
Perdix 2 vs Shearwater Peregrine
Shearwater Peregrine on Amazon
| Feature | Perdix 2 | Peregrine |
|---|---|---|
| Air Integration | Yes | No |
| Price | ~$1,200 | ~$500 |
| Battery | AA | Rechargeable |
| Technical Modes | Full | Basic |
Verdict: Choose Peregrine for recreational diving. Choose Perdix 2 for air integration and tech diving.
Perdix 2 vs Garmin Descent Mk2i
The Garmin is described as “the best of the non-Shearwater dive computers” offering smartwatch functionality.
| Feature | Perdix 2 | Garmin Mk2i |
|---|---|---|
| Smartwatch | No | Full features |
| Screen | Larger | Smaller |
| Battery | AA replaceable | Rechargeable |
| Tech Diving | Superior | Good |
Verdict: Choose Garmin for smartwatch features. Choose Perdix 2 for pure dive computer excellence.
Perdix 2 vs Apeks DSX
The Apeks DSX is a newer 2025 competitor with built-in GPS and wireless charging.
| Feature | Perdix 2 | Apeks DSX |
|---|---|---|
| GPS | No | Yes |
| Charging | AA battery | Wireless |
| Track Record | Legendary | New |
| Updates | Proven support | TBD |
Verdict: Perdix 2 has proven reliability. Apeks DSX offers newer features but less track record.
Recommendation by Diver Type
Beginners
Recommended if budget allows - offers growth into technical diving as skills develop.
Recreational Divers
May prefer the less expensive Shearwater Peregrine if air integration isn’t needed.
Technical Divers
Ideal choice for advanced capabilities including trimix and rebreathers.
Underwater Photographers / Scientists
Air integration makes this essential for hands-full diving scenarios where checking an SPG is difficult.
Related Reviews
- Best Dive Computers 2025
- Shearwater Dive Computers Compared
- Shearwater Teric Review
- Shearwater Peregrine Review
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About the Author
Dr. Simon Pierce is a marine biologist and co-founder of the Marine Megafauna Foundation, leading the Global Whale Shark Program with over 20 years of diving experience.
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Source: naturetripper.com/gear/shearwater-perdix-2-dive-computer-review