Shearwater Peregrine Review: The Display Is the Product

Two buttons, thirty hours of battery and the clearest screen in recreational diving, with no air integration.

Specifications

Specifications above come from Shearwater Research's published specifications. Treat pricing as approximate, since Amazon pricing moves.

What it does well

• The screen is the reason people buy Shearwater. A large, bright colour display that stays readable in green water and at depth removes an entire category of underwater guesswork.
• Two buttons with a context-aware menu is far easier to operate in gloves than a four-button computer with modal menus.
• Rechargeable with a wireless station means no battery hatch, which means one fewer O-ring seal that can be flooded by a bad service or a trapped hair.
• Shearwater's decompression implementation is the one technical divers trust, and a recreational diver inherits that pedigree and the ability to adjust conservatism deliberately.
• Thirty hours of runtime covers a full liveaboard week without a charger going anywhere near salt water.

Where it falls short

• There is no air integration. It will not show you tank pressure and it will not calculate gas time remaining, so you still carry a submersible pressure gauge and you still check it.
• It is a large puck, not a watch. It goes on for the dive and comes off afterwards, unlike the Teric which is wearable daily.
• A dive computer models tissue loading with an algorithm. It does not measure nitrogen in your body, and no computer can tell you that a given profile is safe for you on a given day.
• Conservatism settings matter and the defaults are a starting point, not a personal prescription. Changing them without understanding what gradient factors do is a way to make a computer less safe while feeling more informed.
• Rechargeable means you are responsible for charging it. A computer with a flat battery on the boat is a dive missed, where a user-replaceable battery can be carried as a spare.

What owners report

Owner reports on the Peregrine are among the most consistent of any piece of dive gear: the display and the interface draw near-universal praise, and the recurring criticism is the absence of air integration. Divers coming from a small monochrome computer describe the screen as the single biggest quality of life improvement they have made.

The choice most buyers are actually making is covered in our Peregrine versus Teric comparison, which is a form factor and air integration decision rather than a capability one, and in our Suunto versus Shearwater comparison, which is where the algorithm conversation belongs.

Whatever computer you dive, understand what it is doing. Our Buhlmann versus RGBM comparison explains why two computers on the same dive can disagree, and our no-decompression limits table gives the underlying numbers. A computer is a planning and monitoring tool used by a trained diver, not a substitute for the training. Nothing on this page replaces training. Dive equipment is only as safe as the diver using it, and every item here assumes you hold a current certification appropriate to the diving you are doing.

Who it suits

• Recreational divers who want the best screen available and Shearwater's decompression implementation.
• Divers moving into deeper recreational or light technical diving who want room to grow.
• Anyone who has struggled to read a small monochrome computer in poor visibility.

Who should skip it

• Divers who want air integration and gas time remaining.
• Anyone wanting a computer they can wear as an everyday watch.
• Buyers on a first-computer budget, where a simpler unit costs half as much.

Alternatives worth considering

Keep reading

• Shearwater Peregrine vs Teric
• Suunto vs Shearwater
• Buhlmann vs RGBM algorithms
• Wrist vs console dive computer
• How to choose a dive computer
• No-decompression limits table
• Suunto Zoop Novo review
• Best dive computers

This review draws on published specifications, manufacturer figures and the consensus of verified owner reviews. We have not tested this product ourselves, and we say so rather than implying otherwise. As an Amazon Associate we earn from qualifying purchases.