Choosing dive computers & instruments means resolving a practical tension: is a wrist computer, a banded computer, or a console the better fit for your setup-and do you need wireless tank-pressure data, a compass, or neither? The four choices below cover distinct configurations, but their used condition and included accessories matter as much as the headline features.
Quick take
Prices span USD 119.95 to USD 624.99, a $505.04 spread, but price alone does not settle the decision. The practical question is which named function or included item matters for your setup. All four carry a used condition, so weigh wear, package contents, and the explicitly untested status of the Cobra before choosing.
Listed-price comparison
| Product | Listed price | Price bar |
|---|---|---|
| Shearwater Perdix Wrist Dive Computer - Black - Original OG, NO AI | USD 500.00 | |
| Shearwater Teric Dive Computer Black 55mm | USD 624.99 | |
| Suunto Eon Core Wrist Dive Computer - White with Transmitter And USB | USD 450.00 | |
| Suunto Cobra Air Integrated Scuba Dive Computer Compass Console w/ Case Untested | USD 119.95 |
Decision matrix
- Original model with no air integration: Shearwater Perdix, identified as an original Gen 1 Perdix without air integration.
- 55mm case and silicone band: Shearwater Teric, with Android compatibility listed alongside its case and band attributes.
- Transmitter and USB included: Suunto Eon Core, with wireless tank pressure and a digital compass among its named functions.
- Console form with an explicitly untested condition: Suunto Cobra, for shoppers considering its air-integrated compass configuration.
Product notes
Shearwater Perdix Wrist Dive Computer - Black - Original OG, NO AI
The Shearwater Perdix makes sense for someone specifically seeking the original Gen 1 model and a 54-dive history. Its no-air-integration configuration is clearly different from an instrument built around wireless tank-pressure data. The used unit has scratches across the housing, while a screen protector may conceal whether marks extend farther. Broken buckle arms are another concrete limitation, and the package does not include a box. Blue bungees may be included, but they are not described as a complete original strap system. Choose the Perdix when that original model identity and no-AI setup are the priority; visible wear and buckle repair make it a poor fit for shoppers wanting a cleaner, ready-to-wear presentation.
Shearwater Teric Dive Computer Black 55mm
The Shearwater Teric suits shoppers who care about the specified 55mm case, silicone band, and listed Android compatibility. Its included pieces are unusually clear: the computer, M/L band, genuine charger, case, documents, and carabiner are named. That gives the package a defined shape without requiring assumptions about extra accessories. The main limitation is the highest listed price in this comparison, combined with a used condition. Unlisted accessories, including power cables, are not included. Choose the Teric when its case size, band material, Android compatibility, and charger matter more than the price spread; shoppers prioritizing a lower listed price have other configurations to consider.
Suunto Eon Core Wrist Dive Computer - White with Transmitter And USB
The Suunto Eon Core is a strong match for a setup centered on display clarity and wireless tank pressure. It has a clear color display with large digits, plus a digital compass, wireless mobile connection, rechargeable battery, updatable software, and customizable settings. The title also specifies a transmitter and USB, giving the configuration a concrete accessory advantage. Its limitations are the used condition and its mid-range position in the listed prices. The white finish is another defining detail. Choose Eon Core when the transmitter-inclusive setup, readable display, rechargeable battery, and digital compass all belong in the same choice; shoppers focused only on the lowest listed price will find the Cobra more direct.
Suunto Cobra Air Integrated Scuba Dive Computer Compass Console w/ Case Untested
The Suunto Cobra is the lowest-listed-price route for someone specifically seeking an air-integrated scuba console with a compass and case. Those functions make it distinct from the wrist-named computers and from the no-air-integration Perdix. Its decisive limitation is the explicitly untested condition, which should shape the purchase more than the price alone. The used status adds another constraint. Consider the Cobra only when an untested instrument fits your tolerance and the console format matches your equipment plans. Choose the Perdix, Teric, or Eon Core instead when a named wrist computer, a specified band and case, or a transmitter-inclusive setup is more important than the Cobra's entry price.
Final recommendations by use case
- For an original OG, no-air-integration wrist computer: Choose the Shearwater Perdix, provided the scratches, broken buckle arms, and incomplete package suit your expectations.
- For a 55mm case and silicone band: Choose the Shearwater Teric, especially when its charger, case, documents, and listed Android compatibility are useful.
- For transmitter and USB with wireless tank-pressure data: Choose the Suunto Eon Core, whose color display, large digits, rechargeable battery, and digital compass add to that setup.
- For an air-integrated compass console with a case: Consider the Suunto Cobra only if its explicitly untested condition is acceptable.
The table shows how far apart the listed prices are, while the product notes clarify why the lowest price is not automatically the simplest choice. Match the instrument's named format and functions to your diving setup first, then use condition and included gear to break the tie.
