Best Dive Computers of 2026

The box is the argument here: the Peregrine TX and the Swift transmitter arrive together, so tank pressure shows up on your wrist without a separate shopping list. For a diver who wants air integration from the start, this is the most complete package in this set. We like that the computer still uses the same large color screen and straightforward interface as the Peregrine, because air integration should add information, not complexity.

Beyond the transmitter, the TX supports three gases from 1 to 100% oxygen and adds a tilt-compensated digital compass. That makes it a more useful travel computer for nitrox dives and navigation, not just a tank-pressure display. The 120-meter rating and 2.2-inch screen carry over, and the wireless charging routine is the same one we appreciate on the Peregrine.

The trade-off is specialization. This is a computer for someone who wants tank pressure and a compass on the same screen; a recreational diver who is happy with depth, time, and no-deco limits can keep the simpler Peregrine. If you already carry a separate pressure gauge and compass, the TX's main advantage is convenience rather than capability. For the diver who wants one wrist display for gas and navigation, it earns the step up.

The Descent G1 is the computer we reach for when a trip mixes diving with running, hiking, or a week of ordinary watch wear. It looks like a rugged sports watch, with a sapphire lens and silicone bands, and it keeps dive data separate from daily tracking instead of making you choose one mode for the whole trip. That crossover is the reason it belongs in a dive-computer roundup rather than a fitness-watch one.

Underwater, Garmin rates the G1 for up to 25 hours in dive mode, and the GPS/GLONASS/Galileo support marks your surface entry and exit points so you can see where a dive started and ended. The monochrome display is a deliberate choice: it is not as vivid as the AMOLED screen on the Mk3i, but it stays legible and helps the battery last for days in smartwatch mode.

We found the G1's best trick is the way it disappears into daily life: you can track a run, check your heart rate, and still have a dive computer on your wrist for the afternoon boat. Garmin rates it at 21 days in smartwatch mode, and the watch is light enough to wear all day. That flexibility is the convenience of carrying one watch for the whole trip.

The G1 is not the computer for a technical diver who wants tank pressure and multiple gases, but it is the most natural crossover here for travel. If your diving is recreational and your luggage is already full of running shoes, this is the one that earns its space.

The 43 mm case is why this Mk3i earns a place: it puts a 1.2-inch AMOLED screen, a titanium bezel, and a 200-meter rating on a wrist that does not want a dinner plate. We appreciate that Garmin kept the dive-first controls and leakproof inductive buttons rather than shrinking the capability along with the case. On a smaller wrist, the difference is immediate.

For technical and travel diving, this is the most capable package in this set. SubWave sonar handles tank-pressure monitoring and preset diver-to-diver messages up to 30 meters, DiveView maps add bathymetric contours and more than 4,000 dive sites, and the dive-readiness tool factors sleep, stress, exercise, and jet lag into how prepared you are for the water. That is a lot of capability, and it is why the Mk3i is the most feature-rich pick here.

What you give up is simplicity. The sapphire lens can pick up scratches, and the strap is the part we watch most closely over time; a screen protector and a spare strap are sensible additions for a travel-heavy diver. If you want the most capable dive watch here and will use the maps, messaging, and tank monitoring, the Mk3i earns the attention. If you mostly need depth, time, and gas, the Peregrine is the calmer buy.

The Donatello's single-button interface is the whole pitch: one control to learn, fewer places to fumble with thick gloves, and a case that stays simple when the water is cold. We recommend it to occasional recreational divers and freedivers who want a straightforward backup computer rather than a feature-heavy primary. The user-changeable battery is the other practical win, because a remote trip does not depend on finding a charging cable.

Air and nitrox modes cover the usual recreational profiles, and the freediving gauge mode means one computer can handle a mixed week of tank dives and breath-hold sessions. The 150-meter rating is generous for recreational use, and user-selectable deep stops let you tailor the ascent plan. As a first computer for guided dives, a backup, or a freediving crossover, the Donatello keeps the cost and the complexity low. It is the one we pack when the main computer is staying home.

The LCD is a basic unit rather than a color screen, and the infrared link is the older way to move dive logs to a phone or computer. Neither is a problem for a backup computer that mostly needs to show depth, time, and no-deco status. It is the difference between a tool you check and a screen you enjoy; the Donatello is firmly the former.

At 0.15 kg, the D5 is the lightest-feeling computer in this group, and the compact case is a relief on a wrist that has spent the day under a drysuit cuff. We noticed the difference most when switching between computers on a boat: the D5 disappears, while the bigger screens feel like a piece of equipment. That small size is the whole reason to consider it, and also the source of its main compromise.

With a compatible Suunto transmitter, the D5 puts tank pressure on the same wrist display as depth and time, and the vibration alarm is easier to notice than a beep in low visibility. The digital compass adds a useful navigation screen, and the 100-meter rating is enough for recreational diving. The compact package makes it a natural travel computer for a diver who wants air integration without a large case.

The catch is the screen. It is small, and reading it with less-than-perfect eyes or in murky water is the trade-off for the compact case. Battery life is rated at up to 12 hours of diving, which is fine for a day boat but tight for a liveaboard week. We see the D5 as a light travel computer for recreational divers who want tank pressure, a compass, and vibration alerts in a small package, not as a technical primary.