11 Best Wrist Dive Computers | Bühlmann Beats Brighter Screens

Check price on Amazon

One button, two worlds — scuba and freediving in a single cheap wrist unit.

The Donatello is the budget pick for the diver who does not want to think about menus. A single button runs the whole thing, so there is nothing to mis-press when your hands are thick with gloves and the surface is choppy. It also carries a freediving gauge mode, which lets a breath-hold diver use the same watch they wear on scuba — the one feature that makes this stand out at its price. Its 320 milliamp-hour lithium manganese dioxide battery sits well under the Peregrine’s 900 milliamp-hour cell, which is worth knowing if you dislike charging.

Buyers report it performing across dive sites on several continents, and the build quality comes in for repeated praise. What is not settled is the interface. Some divers find the single-button navigation easy and clean, others say the menu flow is not intuitive to learn. That split is the honest picture: it is simple in concept, but it takes a dive or two to get fluent before you trust it in low visibility.

Two smaller points a careful buyer will care about. There is no GPS, so nothing is geotagged automatically. And the IR link to your phone or computer means a line-of-sight transfer rather than a wireless one, which is fine for logging at the end of the day but less slick than Bluetooth. Neither affects the dive itself. Both affect how much admin you do after it.

Check price on Amazon

A technical diver’s starter box: adjustable algorithm and three gases on a modest budget.

This is where a diver begins to think like a technical diver without paying technical prices. The Puck 4 runs the Bühlmann ZH-L16C algorithm with adjustable gradient factors, so you can dial your decompression schedule more or less conservative depending on the dive. It also handles up to three gases — air, nitrox, and a bottom timer — which is more gas flexibility than most entry-level computers offer. A decompression planner and a digital logbook come built in, and the segment display uses chip-on-glass technology to stay readable with large numbers at depth.

Bluetooth connectivity makes the log side painless; you push your dive data to the Mares app rather than keying anything in by hand. The one-button interface keeps the underwater operation simple, and the resettable average depth is a practical touch for anyone working a reciprocal profile. A temperature rating of 6 °C tells you it is rated for cold water, so it will not flinch on a British or Pacific Northwest dive.

The honest limit is the display. It is a segment screen, not a color panel, so it reads clearly but plainly — no colorful safety-stop cues or graphical gas bars. If you have been spoiled by the Peregrine’s color screen above, this will feel basic. The payoff for that simplicity is the gas handling and the algorithm control, which are what actually extend a technical diver’s useful dive time.

Check price on Amazon

The dive computer that also counts your runs and tracks your sleep.

Pick the G1 if you want a dive computer you never take off. It marks surface entry and exit points with GPS, GLONASS, and Galileo support, so you can see where you started and ended a dive — a genuinely useful tool for repeat-site navigation. It tracks over 30 built-in sports apps and advanced training features, and the sapphire lens and silicone bands are built for daily wear rather than a life in a dive bag. Battery runs up to 25 hours in dive mode, 21 days in smartwatch mode, and 26 hours in GPS mode.

What owners like most is how much the watch does for the price — it is the value play in the Garmin range and the one that makes a case for owning a single watch. The monochrome display is the compromise, but the size comes in for positive comment, so it sits comfortably on most wrists rather than swallowing them. The dive logging changes hands here: up to 200 dives stored on the wrist and reviewed in the Garmin Dive app, which is the smoother system on this list than the Cressi’s IR line-of-sight transfer.

Battery life is the aspect Garmin’s own buyer base is least united on, so treat the dive-mode figure as the number to plan around, not the smartwatch figure. Freediving, spearfishing, and technical modes are all covered, so this one watch spans a lot of diving styles. What it does not do is show your tank pressure — there is no air integration — so a hose gauge stays on your regs.

Check price on Amazon

Hoseless tank pressure on your wrist — the whole point of the Luna 2.0.

If you want your air on your wrist without a hose, this is the straightforward answer. The Luna 2.0 monitors tank pressure wirelessly and calculates a true remaining bottom time (RBT) based on how hard you are breathing, which is a smarter figure than a raw pressure number on a hose gauge. The screen is a wide, high-contrast black and white LCD with large characters and a bright LED backlight, so it reads in dim water, and the slim thermoplastic housing uses oil fill technology for reliable performance. Two buttons run the menus.

You get two algorithm options — the predictive multi-gas Bühlmann ZH-L16 ADT MB PMG, or the ZH-L16 with gradient factor — so you can pick the more conservative or more liberal schedule to suit your diving. Nitrox compatibility is built in, the silicone strap and buckle are conventional and comfortable, and Bluetooth gets your logs onto a phone, tablet, or PC. The EU spare part availability of 7 years is a quiet reassurance that this is a long-term piece of kit rather than a disposable gadget.

The catch is the small things that come with any air-integrated system: you need to pair the transmitter before each dive, and the pressure reading is only as good as that pairing. There is no GPS, and this is a recreational and nitrox setup rather than a trimix technical tool. For a diver who wants to look at their wrist instead of a console, those trade-offs are easy to accept.

Check price on Amazon

Five transmitters, eight colors, and a digital compass — this is the group diver’s color pick.

The Quad Ci earns its spot with an 8-color MIP display (a reflective screen that stays readable in bright sun), so you get color cues without going full smartwatch. That color shows your dive data at a glance. A full-tilt digital compass with a built-in stopwatch turns navigation and timing into a wrist job, not a separate instrument. The customizable Bühlmann ZH-L16C algorithm (a decompression formula you can tune) lets you set gradient factors to taste. Air, nitrox, and trimix modes cover everything from a shallow reef to a decompression dive. If you want a simple air-only computer, this is more watch than you need.

Air integration is where this one goes further than most: it can pair with up to five transmitters, showing real-time tank pressure and saturation levels color-coded for quick reading. If you dive a rebreather support setup or a multi-tank configuration, that many transmitters is a real advantage over the two or three typically offered. Bluetooth to the Mares app brings firmware updates and dive profile analysis, and up to 20 hours of dive time per charge covers a normal trip between chargers.

The honest trade is the display technology. MIP is a low-power reflective screen, so it is easier on the battery than an AMOLED panel but less vivid than the SUUNTO Ocean’s luminous touchscreen. It is also a comparatively new-to-market watch, so there is less long-term owner history to lean on than the established Peregrine or Teric. Neither point is a flaw — both are decisions about how much you value screen pop versus battery endurance.

Check price on Amazon

The watch that logs your dive route in 3D and then paces your marathon.

If your weekends mix a reef dive with a long run, the SUUNTO Ocean is built for you. It runs a 1.43″ color AMOLED touchscreen with a Dive UI designed for underwater readability, and it supports freediving, snorkeling, mermaid diving, and single- and multi-gas diving with air and nitrox. The advanced Bühlmann 16 GF algorithm and wireless tank pod compatibility let you follow multiple tank pressures and gas consumption on the watch, with mandatory alarms. Sapphire crystal and stainless steel give it a 100 m water resistance and a 60 m measurement range.

Battery and navigation are where this one pulls ahead of the G2. Up to 40 hours in dive mode, up to 26 days standby, and up to 12 days of daily use with all-day heart rate give you a lot of headroom, and a fast charge brings it to full in about an hour. A dual-band GNSS system (two satellite frequencies for a steadier position fix) and global offline maps let you navigate to a dive site above water. Underwater route tracking is the newest trick: you can save your dive route in 3D to the Suunto app and share it afterwards. More than 95 preset sports modes and an AI Coach that reads hundreds of parameters make it a serious training watch too.

The honest note is that this is the most multi-sport-focused of the dedicated dive computers here, so if your only sport is diving, you are paying for capability you may not use. It also leans on the tank pod for air integration, which is a separate piece of hardware. But for the diver-triathlete, it is the most complete one-watch answer on this list.

Check price on Amazon

A trimix decompression computer in a wristwatch case — the technical diver’s tool.

This is the watch for the diver who plans their own decompression and dives mixed gas. The Teric runs a Bühlmann ZHL-16c algorithm with configurable gradient factors, so your schedule is yours to set. It supports Open-Circuit, Fixed PO2, Gauge, and Freediving modes, plus optional wireless tank pressure transmitters for air integration. Switchable audible and vibration alerts let you choose how the watch gets your attention — handy when a beep is lost in a hood or a regulator. A 316 stainless bezel and buttons give it a rugged feel, and a 22 mm strap with the extender included fits over a drysuit cuff.

The screen is what owners talk about most. It is super bright with different brightness settings, and the display is easy to read with an interface that snaps to set on menus, so you are not spinning through options. The color cues help deeper work too: safety stop shows in green, so a glance tells you whether you are clear. It weighs 40 g, which keeps it from feeling heavy on the wrist through a long day of diving, and upgradeable firmware means the watch gains features over its life rather than being frozen at purchase.

What you give up is easy readability in bright, simple terms — the LCD screen is not the vivid AMOLED you would get from a smartwatch-style Garmin, and there is no GPS. But a technical diver is buying algorithm control and alerts, not screen flair. If that is you, this is the shortest path to a computer that will follow you into trimix.

Check price on Amazon

Eighty hours of dive-mode battery and five-tank air integration in a titanium case.

Up to 80 hours in dive mode is the longest dive-mode figure on this list, which makes the Mk2i the endurance pick for a diver who lives aboard for a week or more. Up to 16 days in smartwatch mode means it keeps going as an everyday watch between trips. The 1.4” color sunlight-readable display is 36% larger than the previous model, so the read is easy in bright surface light. It pairs with the Descent T1 transmitter (sold separately) for integrated pressure monitoring on up to five tanks via the SubWave sonar data network. That shows remaining air time and air consumption rate for you and other divers within a 10-meter range. The catch: the tank transmitter costs extra, so budget for it if you want air integration.

What wins Mk2i owners over is the titanium build and the breadth of dive data it tracks. The titanium case with a black band looks and feels premium, the accuracy of the readings gets noticed, and the sheer amount of data it tracks will satisfy anyone who likes numbers. Dive logging holds up to 200 dives on the wrist with review in the Garmin Dive app. Six dive modes, multi-GNSS support, and ABC sensors including an underwater compass cover every part of the dive from entry to exit, though GPS tracking does not work underwater.

The trade is weight and breadth of complexity. This is a big, capable watch that asks you to learn its menus, and the five-tank air integration depends on a transmitter you buy separately. If you dive a single tank and never look past the main screen, the simpler Peregrine is a calmer choice. If you want the most dive battery and the most tank flexibility, this is the one.

Check price on Amazon

Diver-to-diver messaging up to 30 meters — this is the group-diving flagship.

The Mk3i is the watch for the buddy team or expedition that wants the most connected dive possible. Its SubWave sonar lets divers exchange preset messages up to 30 meters and monitor tank pressures and depth for up to eight divers within a 10-meter range when paired with the Descent T2 transceiver (sold separately). A 1.4” AMOLED display under a scratch-resistant sapphire lens in a 51 mm titanium bezel makes it the biggest and sharpest screen here, and a 200-meter dive-rated case with metal leakproof inductive buttons handles technical and freediving modes. A built-in LED flashlight with red and white light and variable intensities is a small but genuinely useful extra for low-light entries.

What wins Mk3i owners over is the range of dive features and how reliably they work, plus up to 25 days of battery in smartwatch mode. The DiveView maps cover bathymetric depth contours and more than 4,000 dive sites, so you can find your way to a site and orient at depth, with multi-band GPS for surface accuracy. A dive-readiness tool weighs sleep, exercise, stress, and jet lag into advice on whether you are prepared for the next dive, and up to 200 dives can be stored and shared through the Garmin Dive app.

The honest caveat sits with long-term durability confidence — some owners express concern about how well it holds up over years of hard use, which is fair for a watch with so much glass and electronics in it. Treat it as premium gear that wants a rinse and a case, not a beater. The other caveat is price-to-feature: you pay for group sonar and dive-site maps, so if you dive solo and local, the simpler Mk2i covers the basics for less.