Should you buy the Shearwater Perdix 3?

The Shearwater Perdix 3 is a full-size, technical-capable dive computer built for divers who want a large, easy-to-read display, AA battery convenience, Bühlmann GF decompression, trimix support, CCR support, and wireless air integration in one reliable wrist computer.

For underwater photographers, it is especially useful because the large AMOLED screen and strong vibration alerts help you monitor gas, deco, depth, and compass headings without breaking concentration during macro, wide-angle, current, night, or cold-water dives.

• Best for: advanced recreational, technical, sidemount, trimix, CCR, and photo/video divers who want a large primary computer.
• Main advantage: bright full-color AMOLED readability with a familiar Shearwater two-button workflow.
• Compatibility note: supports up to 4 wireless Shearwater gas pressure transmitters and works with Perdix 2 straps, protective cases, and screen protectors.
• Major differentiator: upgraded display, faster Bluetooth, refined menus, Big layout, vibration alerts, and GPS transmitter support compared with earlier Perdix models.
• Tradeoff: it is a full-size technical computer, not a compact watch-style model; travel divers wanting a smaller wrist profile may prefer Teric, Tern TX, or Peregrine TX.

Quick Specs

Shearwater Perdix 3 at a glance

Why It Stands Out

A Perdix for divers who want better visibility and faster workflow

The Shearwater Perdix has been a favorite among experienced divers because it is readable, predictable, and easy to operate underwater. The Perdix 3 keeps that practical formula and updates the areas divers notice most: screen clarity, menu navigation, Bluetooth speed, layout options, vibration alerts, and transmitter flexibility.

Choose the Perdix 3 over more compact alternatives when display size, AA battery flexibility, technical diving capability, and fast access to critical information matter more than having a watch-style computer.

Field-Tested Features

Features that matter underwater

Bright AMOLED display with Big layout

A large, bright display is not just a comfort feature. When you are shooting a subject, managing buoyancy, watching your buddy, and checking gas, the easier-to-read screen helps reduce task loading.

• Large, high-contrast dive data for low light, night dives, and deep profiles
• Big layout option for quick checks without staring at your wrist
• Color customization helps prioritize the numbers you care about most

Air integration that scales with your diving

The Perdix 3 can monitor up to four wireless transmitters, making it useful for single-tank recreational dives, sidemount, stage/deco bottles, and more complex gas planning. For photographers, that means gas pressure stays visible without constantly reaching for an SPG while handling a camera rig.

• Supports up to 4 wireless gas pressure transmitters
• Pairs naturally with Shearwater Swift or Swift GPS transmitters
• Helpful for sidemount, stage bottles, and technical training progression

Simple controls, advanced dive planning

Shearwater’s interface is popular because it stays logical under pressure. The Perdix 3 adds refined menus while keeping the direct two-button operation divers already trust.

• Integrated NDL and decompression planners
• Bühlmann GF algorithm with full decompression support
• Trimix and CCR support for divers moving beyond recreational profile

Comparison Guidance

Shearwater Perdix 3 vs Perdix 2, Teric, and Peregrine TX

Recommended Accessories

Commonly purchased with the Perdix 3

Our take on the Shearwater Perdix 3

The Perdix 3 is the dive computer we would point serious divers toward when they want a readable, future-proof wrist computer that can keep up with everything from reef photography to trimix and CCR diving. It is not overcomplicated for everyday diving, but it has enough depth for divers who are training, traveling, and adding more complex gas setups.

A different product may be better if you specifically want a smaller watch-style computer or if you only need a recreational nitrox computer at the lowest possible price. But for divers who value big-screen readability, AA battery convenience, Shearwater reliability, and clean air integration, the Perdix 3 is one of the strongest choices in the Shearwater dive computer lineup.

Why Buy From Bluewater Photo

Expert support before and after your dive trip

• Shearwater is trusted by recreational, technical, rebreather, and professional divers for practical, readable dive computers.
• Bluewater Photo helps divers configure complete underwater systems, not just single products.
• We can confirm transmitter compatibility, battery recommendations, accessory fit, and setup details before you travel.
• Our team supports underwater photographers who need dive gear that works cleanly around large camera systems.

Content reviewed by Bluewater Photo staff, recognized as the #1 online retailer specializing in underwater photography and scuba diving equipment, with real-world experience supporting, selling, and configuring underwater camera systems.

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