The Shearwater Perdix 3 has one change that matters: the screen. It swaps the Perdix 2’s 2.2 inch LCD for a brighter 2.4 inch AMOLED with about four times the resolution. Almost everything else carries over. Same 260 metre depth rating, same battery life, same titanium build, same dive modes, same single AA battery. So whether you should upgrade comes down to one question. Is a much better screen worth $1,850 to you? For most divers with a working Perdix 2, the honest answer is no. For a diver buying their first serious computer, it is a strong yes.

Picture a cold July shore dive at one of Sydney’s deeper sites. Your hands are full, your brain is busy, and you need to read your no decompression limit in one glance. That no decompression limit is how long you can stay at depth before you must make slow safety stops on the way up. Reading it fast is exactly where a dive computer screen earns its keep, and the screen is the main thing the Perdix 3 improves. At Frog Dive in Gladesville, we have sold and dived Shearwater computers for years. Here is a straight look at what is new and who needs it most.

What changed from the Perdix 2 to the Perdix 3?

The Perdix 3 is a Perdix 2 with a much better screen and a refreshed menu. That is the honest summary. The Perdix 2 used a 2.2 inch colour LCD at 320 x 240. The Perdix 3 uses a 2.4 inch AMOLED at 450 x 600, which is about four times the resolution. AMOLED is a display type where each pixel makes its own light. That makes the screen brighter and sharper, with better contrast when you read it at an angle. Shearwater also added 14 colour choices and a giant font option for your most important numbers, like depth and time.

What did not change is just as important. Both computers share the same 260 metre depth rating and the same titanium bezel and buttons. The toughened glass lens and the user-swappable single AA battery are the same too. Both store about 1,000 hours of dive logs and link to up to four transmitters. The Perdix 3 adds support for the Avelo diving system and a freediving mode, which only matter if you use those. If you already own a Perdix 2, you are not missing depth, logging, or battery life. You are missing a nicer screen.

Perdix 2 vs Perdix 3 at a glance

Is a brighter screen worth the money?

A common worry with a brighter screen is shorter battery life. With the Perdix 3, that has not happened. On the 1.5V lithium AA battery most divers use, both the Perdix 2 and the Perdix 3 run up to 60 hours. You are not trading battery for brightness, and you carry a spare AA either way. That is worth knowing, because it is the first thing people assume an AMOLED screen must cost them.

So the screen upgrade is real, but it is a comfort and clarity gain, not a safety fix. The Perdix 2’s display was already clear and easy to read. The jump to 450 x 600 mostly shows up as crisper numbers and smoother colour, not as new information on the screen. If you have ever squinted to read your current computer quickly, the AMOLED will help. If your current display works fine for you, a sharper version of something that already works is a nice to have, not a need to have. That is the honest thing to weigh up before you spend $1,850.

Who should upgrade to the Perdix 3, and who shouldn’t?

Upgrade if you are buying your first serious dive computer, or if you are heading toward technical training and want one computer that covers everything. The Perdix 3 runs air and nitrox, three gas nitrox, open circuit tec, closed circuit with bailout, and gauge and freediving modes. Nitrox simply means air with extra oxygen, which lets you stay down longer on some dives. You can buy the Perdix 3 once and grow into it over years of diving, without buying again.

Hold off if you already own a working Perdix 2. You would be paying $1,850 for a screen, not for new ability. The same goes if you own a Shearwater Peregrine and only dive recreationally. The Peregrine already does that job well, and the Perdix 3’s extra technical modes are wasted on a diver who never leaves recreational limits. There is no safety reason to replace a computer that still works and still reads clearly.

Not sure which camp you are in? You can hire a Shearwater dive computer from Frog Dive for $50 a day and dive it before you commit. A weekend with the layout tells you more than any spec sheet. It is also worth asking our team whether the hire fee can come off a later purchase. If you would rather talk it through first, the dive team on the Gladesville shop floor can walk you through whether the upgrade suits the diving you do.

Is the Perdix 3 a good first serious dive computer?

Yes, if you want one computer that will last your whole diving life. A new diver who buys a Perdix 3 will not outgrow it. It handles simple recreational nitrox today and full technical diving later, so you never have to buy a second, more capable unit. That is the real case for spending more up front.

The honest counterpoint is that you do not need this much computer to start. Plenty of divers do their first 50 dives on a simpler unit like the Shearwater Peregrine and never feel short changed. If you are certain you will move into deeper or technical diving, the Perdix 3 saves you buying twice. If you are not sure yet, a cheaper computer now is a sensible call, and you can step up to a Perdix later.

What does the Perdix 3 cost, and how do you set it up?

The Perdix 3 starts at $1,850 for the computer on its own, in black or silver. That is down from the $1,985 recommended price, and it lands close to what the Perdix 2 cost. The new model costing about what the old one did is a genuine reason to act now rather than wait. From there you have two add ons, both built around air integration. Air integration means sending your tank pressure to the screen wirelessly, so you read air and depth in one place:

• SWIFT AI transmitter, add $550, for $2,400 total. This shows your tank pressure on the Perdix 3 during the dive, so you stop reading a separate gauge.
• GPS transmitter, add $650, for $2,500 total. This adds the same tank pressure feature plus it records your entry and exit points for your dive log. One honest note: GPS does not work underwater. It captures your position at the surface only.

If you already own a compatible Shearwater transmitter, buy the computer on its own and pair them. Frog Dive’s Perdix 3 product page has the full setup breakdown if you want to compare the three options side by side.

Common questions before you order

Is the Perdix 3 a good first dive computer?

Yes for a diver who wants one computer for life, including future technical diving. If you only plan to dive recreationally, a simpler computer like the Shearwater Peregrine will do the same everyday job for less.

Does the Perdix 3 work for technical diving?

Yes. It supports three gas nitrox, open circuit tec, and closed circuit with bailout, alongside recreational air and nitrox. It is built to carry a diver from first certification through technical training on the one computer.

Is it worth upgrading from a Perdix 2?

For most divers, no. The Perdix 3’s main gain over the Perdix 2 is the AMOLED screen. Depth rating, battery life, build, and dive modes are effectively the same. Upgrade for the screen, not for new ability.

When can I get the Perdix 3 in Australia?

Frog Dive has secured early Australian units and lists the Perdix 3 as available to pre-order, with the first allocation limited. If you want one from the first batch, it is worth pre-ordering rather than waiting.

Pre-order or talk it through first

The first Australian allocation is limited, so a diver who wants one from the first batch should pre-order rather than wait. If you are weighing up the transmitter options, have a quick word with the Frog Dive team in Gladesville before you order. On a premium computer, a five minute conversation beats guessing on a $550 or $650 add on you may not need.

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