Shearwater Tern TX Dive Computer
In stock — ships from Irvine, CA
This item is currently on backorder. Order now to reserve yours, and we will ship it as soon as it is back in stock.
Shearwater Tern TX Dive Computer - Black is backordered and will ship as soon as it is back in stock.
Pickup available at In Store
Usually ready in 2 hours
Shearwater Tern TX Dive Computer - Black is backordered and will ship as soon as it is back in stock.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Product Information
The Shearwater Tern TX is a compact watch-style recreational dive computer with wireless air integration, built around a 1.3 in (3.3 cm) full-color AMOLED display at 360 x 360 resolution and rated to 120 m / 394 ft. It pairs with up to four Shearwater wireless transmitters and adds a 3-axis tilt-compensated digital compass, so a single 50 mm wrist unit shows depth, time, tank pressure and heading.
Who it is for
It suits recreational and light technical divers who want tank pressure on the wrist instead of a hose-mounted gauge, and who also wear their computer as an everyday watch. With Air, Nitrox, 3 Gas Nitrox, Gauge and Freediving modes, plus Avelo Mode through an optional unlock code, it covers single-tank recreational diving, multi-gas nitrox dives, breath-hold sessions and Avelo System diving. It can also monitor up to four transmitters at once.
Key details
- Buhlmann ZHL-16C algorithm with gradient factors
- 1.3 in AMOLED, 360 x 360, 350 nits typical brightness (300 nits minimum) behind toughened alkali-aluminosilicate glass
- Internal rechargeable Li-ion battery, 1.33 Wh, up to 20 hours of dive time at medium brightness and about 6 months standby
- Wireless inductive charging via the included USB-C charging station
- Ballistic nylon polymer case with 316 stainless steel bezel and buttons, 50 mm diameter x 16 mm thick, 100 g
- 500-hour dive log at a 10-second sample rate, Bluetooth download and firmware updates
- Switchable vibration alerts, 3 clockfaces and 15 display colors
Compatibility and sizing
The Tern TX works with the Shearwater Swift and Swift GPS transmitters and connects by Bluetooth to the Dive Shearwater and Shearwater Cloud apps. The 22 mm quick-connect Remora band uses a quick-release system, and a shorter Remora band for smaller wrists is included.
What's in the box
- Tern TX dive computer
- Wireless charging station with USB-C cable
- Remora band with quick-release system
- One short Remora band for smaller wrists
- Screen protector
- Product info guide
DiveCatalog.com is an authorized Shearwater dealer and a dive shop in Irvine, California since 2003. Call 888-701-4017 or start a chat if you have questions about transmitter pairing or band sizing.
- Wireless air integration Connects with up to 4 transmitters to display tank pressure from the Shearwater Swift and Swift GPS transmitters.
- AMOLED display 1.3 in (3.3 cm) full-color screen with 360 x 360 resolution, 350 nits typical and 300 nits minimum brightness.
- Proven algorithm Buhlmann ZHL-16C with gradient factors for reliable decompression information.
- Six dive modes Air, Nitrox, 3 Gas Nitrox, Gauge and Freediving, with Avelo Mode available via an optional unlock code.
- Digital compass 3-axis, tilt-compensated digital compass for underwater navigation.
- 120 m depth rating Rated to 120 m / 394 ft for recreational and light technical diving.
- Rechargeable battery Internal 1.33 Wh lithium-ion cell runs up to 20 hours at medium brightness, with roughly 6 months of standby.
- Wireless charging Inductive charging station with USB-C cable is included in the box.
- Durable construction Ballistic nylon polymer case, 316 stainless steel bezel and buttons, and toughened alkali-aluminosilicate glass lens.
- Remora band system 22 mm quick-connect strap with quick-release, plus a short band for smaller wrists.
- Vibration alerts Customizable, switchable vibration notifications in place of audible alarms.
- Logging and connectivity 500-hour dive log at a 10-second sample rate with Bluetooth download and firmware upgrades.
- Personalization 3 customizable clockfaces in 12 or 24-hour formats and 15 selectable display colors.
| Display | 1.3 in (3.3 cm) full-color AMOLED, 360 x 360 resolution |
| Brightness | 300 nits minimum, 350 nits typical |
| Lens | Alkali-aluminosilicate toughened glass |
| Depth Rating | 120 m / 394 ft |
| Dive Modes | Air, Nitrox, 3 Gas Nitrox, Gauge, Freediving; Avelo via optional unlock code |
| Decompression Algorithm | Buhlmann ZHL-16C with gradient factors |
| Air Integration | Wireless; connects up to 4 transmitters |
| Compass | 3-axis, tilt-compensated digital compass |
| Dive Log Capacity | 500 hours (10-second sample rate) |
| Connectivity | Bluetooth for dive log download and firmware upgrades |
| Alerts | Customizable, switchable vibration alerts |
| Battery Type | Internal rechargeable lithium-ion |
| Battery Capacity | 1.33 Wh |
| Battery Life | Up to 20 hours (medium brightness); approx. 6 months standby |
| Charging | Wireless inductive charging via USB-C station |
| Diameter | 50 mm |
| Thickness | 16 mm |
| Weight | 100 g |
| Case Material | Ballistic nylon polymer with 316 stainless steel bezel and buttons |
| Strap | 22 mm quick-connect Remora band |
| Color | Black |
| Warranty | 2 years |
- Tern TX dive computer
- Wireless charging station with USB-C cable
- Remora band with quick-release system
- One short Remora band for smaller wrists
- Screen protector
- Product info guide
⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Frequently Asked Questions
Which transmitters work with the Shearwater Tern TX?
The Tern TX pairs with Shearwater wireless transmitters, including the Swift and the Swift GPS. It can connect with up to four transmitters at once, which lets you monitor multiple cylinders on a single screen. Transmitters are sold separately. If you are unsure which Swift version fits your regulator setup, call 888-701-4017 and we will confirm before you order.
How long does the Tern TX battery last and how do you charge it?
The internal 1.33 Wh rechargeable lithium-ion battery delivers up to 20 hours of dive time at medium brightness and roughly 6 months of standby. Charging is wireless and inductive using the charging station and USB-C cable included in the box.
What is the difference between the Tern TX and the standard Tern?
The Tern TX is the air-integrated version of the Tern watch-style dive computer. It adds wireless air integration for up to four transmitters so tank pressure appears on the wrist. The Tern TX is the air-integrated version of the Tern watch-style computer, adding wireless air integration for up to four transmitters so tank pressure appears on the wrist.
Will the Tern TX fit a small wrist?
Yes. The Tern TX uses a 22 mm quick-connect Remora band with a quick-release system, and Shearwater includes one short Remora band for smaller wrists in the box. The case itself is compact at 50 mm in diameter, 16 mm thick and 100 g, so it wears like a watch both in and out of the water.
Review summary
Reviewers consistently describe the display as crystal clear and easy to read in both dark and bright water, and they like being able to configure what shows on the main screen. The built-in compass, dive logging through the app, and support for multiple transmitters, including older legacy ones, come up repeatedly. Battery life holds up across dives and a week of watch wear. One diver found the buttons stiff and the strap prone to scratching. It suits recreational divers who want a readable, configurable air-integrated computer that also works as a daily watch.
What reviewers like
Good to know





















