Dive Computer overview: Reviews and Guides

We test and review dive computers so you don’t have to guess. At DIVEIN, our team has tested more or less all the dive computers from brands like Shearwater, Garmin, Suunto, Oceanic, Cressi, etc. over the past 20 years in real dive conditions.

Each model has been evaluated using consistent criteria, including screen readability at depth, button response with gloves, battery life across multi-dive days, and how each algorithm handles decompression planning.

Nicolai Lonne holding a row of dive computers while standing in shallow turquoise water
By
Nicolai Lonne
Nicolai Lonne holding a row of dive computers while standing in shallow turquoise water
Author and Co-founder at DIVEIN.com
Nicolai co-founded DIVEIN back in 2009 with his brother Torben - initially with the idea that "if we have a popular blog about diving, then we'd...
- Author and Co-founder at DIVEIN.com
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Diver giving the OK sign while wearing a dive computer underwater
The Suunto Zoop Novo is a long-standing favorite with new divers.
Garmin Descent G2 dive computer resting on a rock, showing its AMOLED display
The G2 has a colorful and crisp AMOLED display.
Four dive computers displayed side by side underwater for comparison
The Apple Watch Ultra’s 49 mm retina display is one of the best we have seen.
Garmin dive computer on our tester's wrist counting down a five metre safety stop
While it may not fit the classic definition of a "beginner" dive computer, we believe the Garmin Descent G2 is a beginner-friendly sportswatch dive computer.
Suunto dive computer display showing depth, dive time, and gas readings on a boat
Even in bright daylight the screen stays legible, showing max depth, tank pressure, no-decompression limit, and surface time at a glance.
Underwater rack of dive computers labelled by model, from Cressi and Suunto to Garmin, Apple and Shearwater
It’s good to know what kind of diving you will be doing if you choose a smartwatch for the task.
Six smartwatch dive computers laid out side by side on a white surface for comparison
Only the Garmin fēnix and Apple Watch Ultra have microphones for communication using cellular networks.
Hands holding a black Garmin dive computer and a teal strapped Suunto Ocean side by side
Size is the same but the experience is slightly different on the Suunto Ocean and Garmin Descent G2.
Row of dive computers and smartwatches mounted on a test bar in open blue water
Most serious divers appreciate the bigger screen on a dive computer, compared to smaller smartwatch displays.
Scuba tester Sylvia holding up two dive computers for the camera during a reef dive
Scuba tester Sylvia with the Garmin fēnix 8 and Mk3i.

Whether you’re buying your first dive computer or comparing high-end dive computers for a liveaboard trip, DIVEIN.com is built to help you make better decisions.

We’re a team of certified instructors, divemasters, and experienced divers who test gear in the water and visit destinations firsthand. Our reviews are written by real experts with real names. Not anonymous content writers.
We’ve been at it since 2009. Independent and founder-run from day one.

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