Trail Gear Advisor

4 Dive Computers & Instruments Compared: Air Integration, Size, and Price

Choosing a dive computer means balancing air integration, format, condition, and price. This comparison matches two Shearwater Teric versions, the original Perdix, and the Oceanic Atom 2.0 to distinct diving setups.

Last updated Aug 26, 2026

Choosing among dive computers & instruments is less about finding one universal answer than matching the right setup to your air-integration needs, format, condition, and price. The fastest way to narrow this group is to decide whether a transmitter is essential, whether a no-AI backup computer is enough, or whether a watch-style unit makes more sense. The two Teric versions, original Perdix, and Oceanic Atom 2.0 separate clearly by those priorities.

Quick take

The listed-price spread is $574.99. The Teric bundle and Atom 2.0 explicitly name air integration and a transmitter, while the Perdix title explicitly says NO AI. The other Teric entry is identified by its 55mm case, silicone band, charger, and case. All four are described as used, so the main trade-off is bundled equipment versus a specific computer format and condition profile.

Listed-price comparison

Prices are shown exactly as listed, with the bars visualizing their relative position within this comparison.

ProductListed priceRelative price
Shearwater Teric BlackUSD 624.99
Shearwater Teric Air IntegrationUSD 899.99
Shearwater Perdix OG, NO AIUSD 500.00
Oceanic Atom 2.0USD 325.00

Decision matrix

  • Air integration: The Teric bundle and Atom 2.0 titles explicitly include air integration and a transmitter. The Perdix is explicitly identified as the no-air-integration model.
  • Teric comparison: The Black Teric centers on a 55mm case and silicone band; the other Teric centers on the transmitter, charger, and expanded feature list.
  • Watch or wrist format: The Atom 2.0 is titled as a dive computer watch, while the Perdix is identified as a wrist dive computer.
  • Condition sensitivity: All four are used. The Perdix adds housing scratches and a broken buckle detail, while the Atom 2.0 is described as older and requires batteries for its transmitter.

Product notes

Shearwater Teric Dive Computer Black 55mm

Shearwater Teric Dive Computer Black 55mm

The Shearwater Teric Dive Computer Black 55mm suits a buyer who wants a clearly identified Teric with a silicone band, genuine charger, case, and documents named in the description. Multi-gas decompression and Android compatibility are also specified. The 55mm case size is the main physical detail to weigh when choosing this format. Its limitation is the used condition; the description also limits included accessories to those explicitly listed. That makes it a sensible pick when the stated case format and included charger matter more than adding a transmitter package.

Shearwater Teric Dive Computer w/ Air Integration Transmitter, Charger

Shearwater Teric Dive Computer w/ Air Integration Transmitter, Charger

The Shearwater Teric Dive Computer w/ Air Integration Transmitter, Charger is a direct match when wireless air integration is central to the dive computer choice. Its description names a full-color AMOLED display, sapphire crystal, digital compass, Bluetooth connectivity, wireless rechargeable battery, audible and vibration alerts, and a 200 m / 660 ft depth rating. The package also includes the air-integration transmitter and wireless charging station. The limitation is that it is used and carries the highest listed price in this comparison. Choose it when that specific transmitter bundle and feature combination matter more than minimizing the price.

Shearwater Perdix Wrist Dive Computer - Black - Original OG, NO AI

Shearwater Perdix Wrist Dive Computer - Black - Original OG, NO AI

The Shearwater Perdix Wrist Dive Computer - Black - Original OG, NO AI is a clear fit for a wrist computer without air integration: the title explicitly says NO AI, and the description identifies it as the model without air integration. The description also gives it a backup-for-tech-diving context. Its limitation is physical condition: scratches are reported on the housing, the male buckle end has only one arm, and the computer is described without a box. That makes it a focused choice for a no-AI backup setup if the broken buckle detail is acceptable.

Oceanic Atom 2.0 Dive Computer Watch Air Integrated Nitrox With Transmitter

Oceanic Atom 2.0 Dive Computer Watch Air Integrated Nitrox With Transmitter

The Oceanic Atom 2.0 Dive Computer Watch Air Integrated Nitrox With Transmitter fits a buyer who wants the title's watch format, air integration, Nitrox wording, and transmitter in one package. The description lists a USB download/upload cable, extension strap, manuals, a watch-face protector, and a transmitter, and says batteries for the transmitter need to be supplied. It is the lowest listed price in the comparison, which strengthens its case when upfront price leads the decision. The limitation is that the model is described as older, and the transmitter battery requirement adds a setup task.

Final recommendation by use case

  • For air integration with AMOLED display, compass, alerts, and an included charging station: choose the Shearwater Teric Dive Computer w/ Air Integration Transmitter, Charger.
  • For the lowest listed price with air-integrated Nitrox wording and a watch format: choose the Oceanic Atom 2.0 Dive Computer Watch Air Integrated Nitrox With Transmitter, while accounting for the transmitter battery requirement.
  • For the Teric configuration identified by a 55mm case and silicone band: choose the Shearwater Teric Dive Computer Black 55mm, accepting its used condition and listed-accessory limitation.
  • For a no-AI backup-oriented computer: choose the Shearwater Perdix Wrist Dive Computer - Black - Original OG, NO AI, provided the housing scratches and broken buckle detail fit your setup.
Products in this article
Shearwater Teric Dive Computer Black 55mmUSD 624.99View on eBayShearwater Teric Dive Computer w/ Air Integration TransmitterUSD 899.99View on eBayShearwater Perdix Wrist Dive ComputerUSD 500.00View on eBayOceanic Atom 2.0 Dive Computer Watch Air Integrated NitroxUSD 325.00View on eBay
Shearwater Teric Dive Computer Black 55mmUSD 624.99View on eBayShearwater Teric Dive Computer w/ Air Integration TransmitterUSD 899.99View on eBayShearwater Perdix Wrist Dive ComputerUSD 500.00View on eBayOceanic Atom 2.0 Dive Computer Watch Air Integrated NitroxUSD 325.00View on eBay

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