Shearwater Tern TX Dive Computer + Swift Transmitter Package
Shearwater Tern TX Dive Computer + Swift Transmitter Package is backordered and will ship as soon as it is back in stock.
What's in this bundle
Shearwater Tern TX Dive Computer + Swift Transmitter Package is backordered and will ship as soon as it is back in stock.
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Product Information
The Shearwater Tern TX Dive Computer and Swift Transmitter Package pairs a wrist-worn, air-integrated dive computer with the wireless transmitter it needs to show tank pressure on your wrist. The Tern TX connects with up to four wireless transmitters, and the Swift mounts on your regulator's first stage high-pressure port to send pressure readings straight to the display, so this package gets you both halves of the wireless air integration setup in one order.
The Tern TX runs a 1.3-inch full-color AMOLED display at 360 x 360 resolution behind a toughened alkali-aluminosilicate glass lens, and it's depth rated to 120 m / 394 ft. It covers Air, Nitrox, 3 Gas Nitrox, Gauge, and Freedive modes on the Buhlmann ZHL-16C algorithm with gradient factors, adds a 3-axis tilt-compensated digital compass for navigation, and switches to vibration alerts when you'd rather skip audible alarms. Its internal rechargeable lithium-ion battery runs up to 20 hours of dive time at medium brightness and recharges on the included wireless charging station with USB-C cable, while Bluetooth handles dive log downloads and firmware updates. The case is black ballistic nylon polymer with a 316 stainless steel bezel and buttons.
The Swift Transmitter threads onto a standard 7/16-inch-20 UNF high-pressure port with no tools required, and its advanced collision avoidance system keeps pressure data reliable even when other divers nearby are running their own transmitters, which makes it a practical fit for group diving, sidemount, or multi-tank setups. It's depth rated to 200 m of seawater with a 300 bar / 4350 psi working pressure rating, reports pressure at a 0.14 bar / 2 psi resolution, and runs on a user-replaceable CR2 3V lithium battery good for up to 300 dive hours with pressure present.
- Wireless air integration The Tern TX connects with up to 4 transmitters, including the included Swift, to display tank pressure on your wrist.
- AMOLED display 1.3-inch (3.3 cm) full-color screen with 360 x 360 resolution and 350 nit typical brightness.
- Proven algorithm Buhlmann ZHL-16C with gradient factors for reliable decompression information.
- Multiple dive modes Air, Nitrox, 3 Gas Nitrox, Gauge, and Freedive, with Avelo Mode available via an optional unlock code.
- Rechargeable battery Internal lithium-ion battery runs up to 20 hours at medium brightness and tops up on the included wireless USB-C charging station.
- Collision avoidance The Swift's advanced collision avoidance system keeps tank pressure transmission reliable when multiple transmitters are in use nearby.
- Tool-free installation The Swift installs and removes by hand on a standard 7/16-inch-20 UNF high-pressure port.
- Matched pair, ready to go The Swift is compatible with all Shearwater air-integrated dive computers, so it pairs with the Tern TX without any extra parts to source.
| Shearwater Tern TX Dive Computer | |
| Feature | Details |
|---|---|
| Display | 1.3 in (3.3 cm) full-color AMOLED, 360 x 360 pixels, 350 nits typical brightness |
| Lens | Toughened alkali-aluminosilicate glass |
| Depth Rating | 120 m / 394 ft |
| Dive Modes | Air, Nitrox, 3 Gas Nitrox, Gauge, Freedive; Avelo Mode 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 |
| Battery | Internal rechargeable lithium-ion, 1.33 Wh; up to 20 hours dive time (medium brightness), approx. 6 months standby |
| Charging | Wireless charging station with USB-C cable (included) |
| Connectivity | Bluetooth for dive log download and firmware updates |
| Alerts | Switchable vibration alerts (no audible alarms) |
| Dive Log | 500 hours at 10-second sample rate |
| Case Materials | Ballistic nylon polymer case, stainless steel bezel and buttons |
| Strap | 22 mm quick-connect strap system |
| Dimensions | 50 mm diameter x 16 mm thick |
| Weight | 100 g |
| Warranty | 2 years |
| Shearwater Swift Transmitter | |
| Feature | Details |
|---|---|
| Battery Type | CR2 3V lithium, user replaceable (Panasonic CR2 Industrial Lithium recommended) |
| Battery Life | Up to 300 dive hours (HP pressure present); 5 year storage time |
| Depth Rating | 200 m of seawater |
| Rated Working Pressure | 300 bar / 4350 psi (HP port proof pressure 450 bar / 6525 psi) |
| Pressure Resolution | 0.14 bar / 2 psi; accuracy 5% of full scale |
| Activation | Activates at 7 bar / 100 psi; deactivates at 3.5 bar / 50 psi |
| Interference Management | Advanced collision avoidance system for multiple-transmitter reliability |
| Status Indicator | LED status indicator for diagnostics |
| Port Thread | 7/16 in - 20 UNF high-pressure port; no-tools installation and removal |
| Operating Temperature | +4 C to +34 C (short-term -10 C to +50 C) |
| Dimensions | 76 mm (L) x 34 mm (D) |
| Weight | 135 g |
| Compatibility | All Shearwater air-integrated dive computers |
| Materials | Oxygen-compatible materials (not delivered pre-cleaned for oxygen service) |
- Shearwater Tern TX Dive Computer
- Shearwater Swift Transmitter
Frequently Asked Questions
How do you charge the Shearwater Tern TX?
The Tern TX has an internal rechargeable lithium-ion battery that charges on the wireless charging station included with the computer, using the included USB-C cable. Bluetooth is used separately for dive log downloads and firmware updates.
What transmitters does the Tern TX work with, and is the Swift transmitter compatible?
The Tern TX pairs wirelessly with up to four transmitters, and the Swift transmitter is compatible with all Shearwater air-integrated dive computers, so the two are matched to work together as this bundle is configured. We don't have data on compatibility with non-Shearwater computers.
How long does the Shearwater Swift transmitter battery last, and can you replace it yourself?
The Swift runs on a single CR2 3V lithium battery that's user-replaceable, no tools or service visit required. It's rated for up to 300 dive hours with high pressure present, and roughly 5 years of storage life.
How do you install the Swift transmitter?
The Swift installs by hand with no tools needed, threading onto a standard 7/16-inch-20 UNF high-pressure port on your regulator's first stage.
What size is the Shearwater Tern TX?
The Tern TX measures 50 mm in diameter and 16 mm thick, and weighs 100 g. It comes on 22 mm quick-connect straps.
What does the Tern TX display look like, and can you change its colors?
The Tern TX has a 1.3-inch full-color AMOLED display at 360 x 360 resolution, with 15 configurable display colors and 3 customizable clock faces to choose from. The case itself is black ballistic nylon polymer with a stainless steel bezel; we don't have data on alternate case color options.
What's included in this bundle, and how does it ship?
This bundle includes one Shearwater Tern TX Dive Computer and one Shearwater Swift Transmitter. Orders over our free-shipping threshold ship free with next-day delivery, and the product page shows the actual delivery date for your order.


















