Dive computers

Dive Computer Reviews

Every dive computer we recommend, Simon's in-depth Shearwater reviews and a side-by-side comparison, with a straight answer on which one suits the way you dive.

Simon Pierce

Written by Simon Pierce

Marine biologist · Updated

Marine biologist and underwater photographer who has dived Shearwater computers since 2017.

Updated About Simon →
  • 8 computers recommended
  • 2 tested hands-on by us
  • 4 in-depth reviews
  • ~3,000 dives between us
Shearwater Perdix 2 dive computer screen showing depth, safety stop time and air integration data

Which dive computer is right for you?

Find the line that sounds like you. Each answer links to the full write-up in our dive computer guide.

  1. Not sure, want the safe choiceShearwater Peregrine TXRead Simon’s review
  2. On a tight budgetMares Puck LiteSee why
  3. Heading into serious technical divingShearwater Perdix 3Read Simon’s review
  4. Want the smallest watch-style computerShearwater Tern TXRead Simon’s review
  5. Want your upgrade to double as a sport watchGarmin Descent Mk3iSee why
  6. Already have an Apple Watch Ultra and dive occasionallyApple Watch UltraSee why
  7. Want the best-looking computer on your wristSuunto D5See why
  8. Want air integration without paying full priceScubapro Luna 2.0 AISee why

Simon's in-depth reviews

The Shearwaters we dive with, reviewed one by one: what they're like after years in the water, and who should buy which.

Our pick · Best dive computer 2026Shearwater Peregrine TXFor recreational divers who want a big, bright screen and Shearwater's ease of use, with air integration and a compass. The original Peregrine skips both for less.2.2 in colour screen~30 h battery per chargeUS$760 TX (original US$580)Read the review Our pick · Best watch-style dive computer 2026Shearwater Tern TXFor recreational divers and freedivers who want a Shearwater they can wear every day, with air integration and a compass. The plain Tern skips both for less.1.3 in AMOLED screen~20 h diving per chargeUS$805 Tern TX (Tern US$595)Read the review Best watch-style dive computer 2026Shearwater TericFor divers who want full tech-diving features and optional air integration in a watch-style computer you can wear all day.1.39 in AMOLED screen~30 h battery, dive mode~US$1,199 typical priceRead the review Our pick · Best dive computer for tech divers 2026Shearwater Perdix 3For tech and advanced divers, underwater photographers, and anyone who wants a big, sharp screen with air integration and a battery you can swap anywhere.2.4 in AMOLED screen40 to 80 h per AA batteryUS$1,295 Perdix 3 (Perdix 2 US$1,195)Read the review
Shearwater Peregrine, Tern and Perdix dive computers side by sideSide by side

Shearwater Peregrine vs Tern vs Perdix Compared

Pick the Peregrine if you are a recreational diver who wants the biggest, simplest screen, the Tern if you want a compact watch you can wear between dives, and the Perdix if you want a big screen and full tech features. The Peregrine TX and Tern TX add air integration and a compass; the cheaper Peregrine and Tern leave them out. The newest Perdix 3 has a brighter AMOLED screen, and the Perdix 2 is still sold for a little less. Tech divers who want a watch should look at the Teric.Compare all three

Every dive computer we recommend

From our Best Dive Computers guide, with the ones we dive ourselves marked.

Waterlust Whale Shark Collection

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Whale Shark Collection

5% of sales go to the Marine Megafauna Foundation's global whale shark conservation projects.