Choosing dive computers & instruments starts with a practical fork: do you need a wrist computer, a bundled computer-and-transmitter setup, or a transmitter to pair with equipment you already own? These four Shearwater choices are not interchangeable. The Teric listings center on two different packages, the original Perdix is explicitly marked without air integration, and SWIFT is a transmitter rather than a dive computer. The useful shortcut is to identify the role first, then compare the listed package, condition, and price.
Quick take
The Shearwater Teric Dive Computer Black 55mm is the computer-centered choice; the Teric bundle includes an air-integration transmitter and charger. The original Shearwater Perdix is explicitly without air integration and carries visible wear and strap limitations. Shearwater Research SWIFT AI Transmitter is the add-on route for compatible air-integrated Shearwater computers. Start by deciding whether you need a computer or an accessory.
Listed-price comparison
The listed prices span $400 to $899.99. The bars show each item's position within this four-item price range, not its capabilities.
| Product | Listed price | Price bar |
|---|---|---|
| Shearwater Teric Dive Computer Black 55mm | USD 624.99 | |
| Shearwater Teric Dive Computer w/ Air Integration Transmitter, Charger | USD 899.99 | |
| Shearwater Perdix Wrist Dive Computer - Black - Original OG, NO AI | USD 500.00 | |
| Shearwater Research SWIFT AI Transmitter | USD 400.00 |
Decision matrix
- Computer with a specified 55mm case and silicone band: Shearwater Teric Dive Computer Black 55mm.
- Teric package with wireless air integration: Shearwater Teric Dive Computer w/ Air Integration Transmitter, Charger.
- Original computer without air integration: Shearwater Perdix Wrist Dive Computer - Black - Original OG, NO AI.
- Transmitter add-on for a compatible computer: Shearwater Research SWIFT AI Transmitter.
Product notes
Shearwater Teric Dive Computer Black 55mm
Shearwater Teric Dive Computer Black 55mm is the clearest fit for someone who wants the Teric computer with the listed 55mm case and silicone band. The package description names a multi-gas decompression dive computer, M/L band, genuine charger, case, documents, and carabiner, giving the purchase a defined computer-and-accessories shape. Its limitation is the used condition, and the package wording says unlisted accessories such as power cables are not included. Pick this Teric when the specified case size and silicone band are more important than a bundled transmitter.
Shearwater Teric Dive Computer w/ Air Integration Transmitter, Charger
Shearwater Teric Dive Computer w/ Air Integration Transmitter, Charger is the package to focus on when wireless air integration is central. Its description names a full-color AMOLED display with sapphire crystal, digital compass, Bluetooth connectivity, wireless rechargeable battery, audible and vibration alerts, a 200 m / 660 ft depth rating, and Air, Nitrox, Trimix, Tech, CCR and Freediving modes. The bundle also names the transmitter, wireless charging station, and case. The clear limitation is its used condition. Choose it for the explicitly bundled computer-and-transmitter arrangement, not if you only need a standalone transmitter.
Shearwater Perdix Wrist Dive Computer - Black - Original OG, NO AI
Shearwater Perdix Wrist Dive Computer - Black - Original OG, NO AI stands apart because it is explicitly marked as the version without air integration. That makes it relevant for a shopper who specifically wants that configuration. Its concrete drawbacks are physical: scratches on the housing, a scratched screen protector, broken buckle hardware with one arm remaining on the male end, and no box; the package is the computer alone, with blue bungees offered. Choose it only when those condition and strap details are acceptable and an air-integration transmitter is not part of the intended setup.
Shearwater Research SWIFT AI Transmitter
Shearwater Research SWIFT AI Transmitter serves a different need: adding a transmitter to an existing compatible dive computer. It is listed as compatible with all air-integrated Shearwater dive computers and specifically connects to Teric, Perdix AI and Nerd 2; the description also names up to 300 dive hours and a collision-avoidance system for simultaneous transmitters. Its limitation is its role: it is a transmitter, not a wrist computer or standalone dive-computer package. Choose SWIFT when one of those compatible computers is already part of the setup and the transmitter's listed compatibility is the deciding detail.
Final recommendation by use case
- Need the bundled Teric setup: Shearwater Teric Dive Computer w/ Air Integration Transmitter, Charger.
- Need a Teric with the specified 55mm case and silicone band: Shearwater Teric Dive Computer Black 55mm.
- Need the original no-air-integration Perdix format: Shearwater Perdix Wrist Dive Computer - Black - Original OG, NO AI.
- Already have a compatible air-integrated computer and need its transmitter: Shearwater Research SWIFT AI Transmitter.
The key choice is role, not just the model name: the two Teric listings are computer packages, Perdix is the explicitly no-air-integration computer, and SWIFT is the transmitter add-on. Match the final pick to that use case, then weigh the listed condition and package contents.
