Dive computers have always had to pack a lot into a small housing, and for years that meant choosing between a screen you could actually read and a form factor you'd want to wear off the boat. The Shearwater Tern TX is Shearwater's answer to that trade-off, and it's one of the more interesting releases we've had come through Dive Box in a while.
We carry it here in Singapore at just $923, and it's currently in stock in black, blue and purple.
A Display That Actually Justifies the Hype
The headline feature here is the 1.3" AMOLED screen, and honestly, once you've dived with one, going back to a standard LCD dive computer feels like a downgrade. Colours are punchy, blacks are properly black, and the contrast holds up whether you're squinting at it in a murky quarry or trying to read numbers under direct tropical sun on a Tioman dive trip. It's the kind of upgrade that sounds cosmetic until you're actually relying on it mid-dive to make a decision about your ascent.
The screen is protected by a toughened glass window, so it's built to take the knocks that come with boat dives and reef entries, not just look good in a product photo.
Wireless Air Integration, Without the Console
The Tern TX is TX enabled, meaning it pairs wirelessly with up to four Shearwater Swift transmitters. Once connected, your tank pressure sits right there on the main screen alongside everything else, and the computer does the maths for you — working out your time-to-air (TAT) and surface air consumption (SAC) in real time. If you've ever dived with a separate pressure gauge and a computer that don't talk to each other, you'll know exactly why this matters. One less thing clipped to your BCD, one less thing to glance down and check separately.
Built to Be Worn, Not Just Strapped On
Most dive computers look like dive computers, full stop. The Tern TX takes a different approach with a genuinely watch-style profile — low-profile bezel, compact body, and a removable silicone strap with remapping pins so you can swap it out. It's the sort of thing that goes from the dive deck to dinner without you having to think about it, which matters more than people expect when you're travelling for a dive trip and don't want to pack two separate wrist pieces.
Charging and Connectivity
No proprietary charging cables to lose in your dive bag — the Tern TX uses Qi wireless charging, and comes with its own charging dock. A full charge gets you up to 20 hours of dive time, which comfortably covers a full liveaboard trip or a weekend of multiple dives without you hunting for a power outlet. Bluetooth connectivity syncs your logs to the Shearwater Cloud app afterwards, so your dive history builds itself in the background.
The Algorithm Behind the Numbers
Underneath the display, the Tern TX runs on Shearwater's Bühlmann ZHL-16C algorithm with adjustable gradient factors, which is the same trusted decompression model used across Shearwater's range. You get Air, Nitrox up to 99%, 3-gas Nitrox, Gauge, and Freediving modes pre-loaded, so whether you're doing a straightforward recreational dive in Singapore's waters or planning something a little more involved, the computer is already set up for it. Being able to customise gradient factors means more experienced divers can tune conservatism to their own comfort level rather than being locked into a fixed setting.
Depth Rating and Durability
Rated to 120 metres, the Tern TX has far more headroom than most recreational divers will ever need — which is exactly the point. A computer that's only just capable of handling your typical dive depth doesn't leave much margin. This one does.
What's in the Box
1 x Shearwater Tern TX Air-Integrated Dive Computer (Black, Purple or Blue)
1 x Removable Silicone Wrist Strap Set with remapping pins
1 x Qi Wireless Charging Dock and Cable
Who Should Be Looking at This
The Tern TX makes the most sense for divers who already have some logged dives under their belt and want a single piece of kit that does air integration, a proper screen, and everyday wearability without compromise. If you're newly certified and still building up your gear collection, it's worth knowing this sits at the more premium end of the dive computer range — but for divers who dive often enough that gear quality actually changes the experience, it's a genuinely worthwhile upgrade.
If you're not sure whether the Tern TX or another model in the Shearwater lineup suits your diving better, drop by Dive Box or book an appointment with us — we're happy to talk through the options in person.
Conclusion
The Shearwater Tern TX isn't trying to be the cheapest or the most feature-loaded computer on the market — it's trying to be the one you actually want on your wrist, above and below the water. Between the AMOLED display, wireless air integration, and a form factor that doesn't scream dive computer the moment you're back on land, it's a compelling case for anyone ready to upgrade. It's available now at Dive Box in Singapore, in black, blue and purple, priced at SGD 923. Shop here for the Shearwater Tern TX