Suunto Nautic vs Shearwater Peregrine TX: Full Dive Computer Comparison

Choosing your next dive computer feels a bit like choosing a dive buddy — you want something dependable, easy to read under pressure, and built to handle whatever the ocean throws at it. The Suunto Nautic and the Shearwater Peregrine TX sit close enough in price and capability that divers keep asking us the same question: which one actually deserves a spot on your wrist? Both computers come from brands with decades of engineering behind them, both are built for real diving rather than marketing photos, and both will comfortably outlast several sets of fins. But they're aimed at slightly different divers, and the differences matter once you're actually in the water. This guide breaks down Suunto Nautic vs Shearwater Peregrine TX feature by feature, so you can work out which one fits your diving rather than the other way around.

This is one of the starkest contrasts between the two. The Suunto Nautic is rated for up to 120 hours on a single charge, which is enough for most divers to forget charging cables exist for weeks at a time. That's a real advantage on liveaboard trips or multi-day expeditions where power outlets are limited. The Shearwater Peregrine TX, by comparison, offers up to 30 hours on medium brightness from its wireless rechargeable battery, using a USB-C wireless charging station that's included in the box. Thirty hours is still generous for a colour-screen dive computer, but it means planning a top-up every few days rather than every few weeks. If you dive back-to-back for extended stretches without easy access to power, the Nautic's endurance is hard to ignore.

Both computers support wireless tank pressure monitoring and sidemount configurations, which puts them on genuinely level footing for technical-leaning divers. The Nautic pairs with Suunto's own Tank POD transmitters to track tank pressure from up to 5 gas cylinders, with colour-coded visuals for at-a-glance clarity. The Peregrine TX can connect up to four optional transmitters and carries over the Perdix 2's air integration algorithms, along with full sidemount support including cylinder switch notifications and gas tracking calculations. Both units handle multi-gas diving — the Nautic supports up to 5 configurable gases (5–100% oxygen) with full decompression planning, while the Peregrine TX offers 3 configurable gases from 1% to 100% oxygen across Air, Nitrox, and 3 Gas Nitrox modes. For divers running multiple stage or sidemount tanks, the Nautic's five-cylinder ceiling edges out the Peregrine TX's four.

The Suunto Nautic's bright AMOLED display is built to stay legible in bright surface light and murky water alike, and its tactile, glove-friendly buttons are designed with thick drysuit gloves in mind. It also throws in tools you wouldn't expect from a dive computer: GPS and offline maps, a digital compass, tide and weather data, sunrise and sunset times, a built-in LED flashlight, Bluetooth connectivity, and vibration alerts — genuinely useful extras for divers who spend as much time planning surface logistics as they do underwater. The Shearwater Peregrine TX keeps things focused, with a large 2.2-inch full-colour LCD screen at 320 x 240 resolution, a tilt-compensated three-axis digital compass, vibration alerts, and Bluetooth connectivity. It doesn't have a built-in GPS receiver, though GPS functionality can be added externally via Shearwater's optional Swift GPS Transmitter. Shearwater's menu system has always prioritised clarity over bells and whistles, so if you want a computer that's fast to read and simple to navigate mid-dive, the Peregrine TX's interface philosophy is worth weighing seriously.

• Battery life: Suunto Nautic up to 120 hours vs Shearwater Peregrine TX up to 30 hours
• Depth rating: Suunto Nautic rated to 200m (EN 13319) vs Shearwater Peregrine TX rated to 120m
• Weight: Nautic at 227g vs Peregrine TX at 125g
• Display: Nautic AMOLED vs Peregrine TX 2.2" full-colour LCD
• Gas count: Suunto Nautic up to 5 gases (5-100% O2) vs Shearwater Peregrine TX 3 gases (1-100% O2)
• Extra tools: Nautic adds GPS, offline maps, flashlight and tide/weather data; both include Bluetooth and vibration alerts; Peregrine TX GPS is available only via the optional Swift GPS Transmitter

Both brands lean hard on their manufacturing heritage, and it shows. The Suunto Nautic is designed and built in Finland, with a fibre-reinforced polymer bezel, Panda glass display, and a glass-fibre reinforced polyamide case — the kind of rugged, leak-proof construction Suunto has been refining since it started making compasses for Arctic conditions in 1936. The Shearwater Peregrine TX is designed and manufactured in Vancouver, Canada, with a ballistic nylon polymer case and a 26mm silicone band with a stainless steel clasp. Shearwater's engineering roots go back to advanced technical diving and rebreather electronics, and that background is baked into how deliberately the Peregrine TX is built for depth-rated reliability.

If you're the kind of diver who plans dive trips around exploration — wrecks, drift dives, multi-day boat trips where charging is inconvenient — the Suunto Nautic's battery life, GPS tracking, and navigation tools make it the more versatile companion. If you want a computer that mirrors the simplicity and trusted algorithms of Shearwater's technical line, without stepping up to the full Perdix 2 price point, the Peregrine TX gives you air integration and a proper compass in a lighter, more compact package. The Nautic sits at the more affordable end of the two, while the Peregrine TX's slightly higher price tag reflects its Perdix 2-derived air integration and compass. Neither computer is the wrong choice; they're simply built around different diving priorities.