Choosing among dive computers & instruments is a use-case decision: do you need a transmitter-inclusive setup, a clearly sized Teric computer, a Perdix marked NO AI, or an apnea-oriented watch? The right pick depends on the function you will actually use, the included equipment you want, and how comfortable you are with a used unit. Here is the clean split among the four choices.
Quick take
The shortlist breaks into four routes: the Shearwater Teric transmitter bundle, the Shearwater Teric Black, the original Shearwater Perdix, and the Mares Smart Apnea wristwatch. Start with the route that matches your diving style, then use price and condition to settle the choice.
Listed-price comparison
The four listed prices differ substantially, so start with the required function rather than the number alone.
| Product | Listed price | Price position |
|---|---|---|
| Shearwater Teric Dive Computer Black 55mm | $624.99 | |
| Shearwater Teric Dive Computer w/ Air Integration Transmitter, Charger | $899.99 | |
| Shearwater Perdix Wrist Dive Computer - Black - Original OG, NO AI | $500.00 | |
| Mares Smart Apnea Dive Wristwatch | $225.00 |
Decision matrix
- Air management: The Teric bundle title names an air integration transmitter, while the Perdix title says NO AI and its description says without air integration. Those explicit labels frame the clearest air-management choice.
- Display and format: The Black Teric lists a 55mm case. The transmitter bundle names a full-color AMOLED display, sapphire crystal, digital compass, and a 200 m / 660 ft depth rating. The Perdix is identified as a wrist dive computer, while the Mares is a wristwatch.
- Condition: The two Teric entries and the Perdix are used; the Mares Smart Apnea is new. That distinction matters when deciding whether the lower listed price offsets the condition of a used instrument.
- Included equipment: The Black Teric names a genuine charger, band, case, documents, and carabiner. The transmitter bundle names an air integration transmitter, wireless charging station, and zippered case. The Perdix description explicitly limits the package to the computer, with blue bungees offered for creating straps.
Product notes
Shearwater Teric Dive Computer Black 55mm
Shearwater Teric Dive Computer Black 55mm gives a buyer a Teric with a named multi-gas decompression function and a useful set of included accessories. Included are a genuine charger, M/L band, case, documents, and carabiner, which suits someone who wants more than the computer alone for a planned scuba setup. The concrete limitation is its used condition. Choose it when that Teric format and accessory package matter more than selecting a different instrument style.
Shearwater Teric Dive Computer w/ Air Integration Transmitter, Charger
Shearwater Teric Dive Computer w/ Air Integration Transmitter, Charger is a direct match for a scuba setup that prioritizes its full-color AMOLED display and named dive modes. The feature set includes Air, Nitrox, Trimix, Tech, CCR, and Freediving modes, along with a digital compass, wireless rechargeable battery, audible and vibration alerts, and a 200 m / 660 ft depth rating. Sapphire crystal is also named. Its concrete limitation is used condition. Pick it when that display-and-mode combination matches your dive planning.
Shearwater Perdix Wrist Dive Computer - Black - Original OG, NO AI
Shearwater Perdix Wrist Dive Computer - Black - Original OG, NO AI suits a buyer who wants the original Gen 1 Perdix identity and a computer previously used as a tech-diving backup. That model-specific character is the reason to choose it. The concrete limitation is physical wear: scratches are described on the housing, the screen protector may conceal deeper marks, and the buckles are broken. The package is also explicitly just the computer, with blue bungees offered to create straps. Choose it for the Perdix format and its stated history, rather than for a clean exterior or a ready-made strap setup.
Mares Smart Apnea Dive Wristwatch
Mares Smart Apnea Dive Wristwatch works for shoppers who want an apnea-oriented wristwatch with explicit tracking and alarm functions. It shows instant depth, dive time, water temperature, descent and ascent speeds, and recovery time; programmable alarms cover depth, time, recovery, speed, and hydration. The concrete limitation is its focused Smart Apnea identity: it may not suit someone specifically shopping for the Teric or Perdix format. Choose it when those displays and alarms match the session and a wristwatch format is the intended tool.
Final recommendation by use case
- For wireless air integration: Choose Shearwater Teric Dive Computer w/ Air Integration Transmitter, Charger. The title names the transmitter and the feature set includes wireless air integration.
- For a Teric Black computer: Choose Shearwater Teric Dive Computer Black 55mm when its named accessory package and multi-gas decompression function fit the plan.
- For the original Perdix route: Choose Shearwater Perdix Wrist Dive Computer - Black - Original OG, NO AI for its Gen 1 identity and explicit no-AI wording.
- For apnea-focused tracking: Choose Mares Smart Apnea Dive Wristwatch when its depth, recovery, and programmable alarm functions match the session.
