Choosing dive computers & instruments means balancing the way you want to wear and read the device against the information you need underwater. A wrist computer, wireless tank-pressure data, multi-gas decompression, compass functions, and a console format each point toward a different setup. Listed price and condition then become practical tie-breakers.
Quick take
Start with the instrument's role rather than its screen alone. The Shearwater Perdix is a used, computer-centered wrist choice; the Teric pairs a 55mm case with a defined accessory package; the Suunto EON Core adds a transmitter and color-display features; and the Aqua Lung I330R-2 takes a two-gauge console approach. The comparison below separates those paths without treating one format as universal.
Listed-price comparison
Prices span $297.50 to $624.99, a $327.49 gap across the four choices. The bars make the relative position of each listed price easy to scan.
| Dive computer | Listed price | Price bar |
|---|---|---|
| Shearwater Perdix Wrist Dive Computer | USD 500.00 | |
| Shearwater Teric Dive Computer Black 55mm | USD 624.99 | |
| Suunto EON Core Wrist Dive Computer | USD 450.00 | |
| Aqua Lung I330R-2 Dive Computer | USD 297.50 |
Decision matrix
Use the primary need as the first filter:
- Computer-centered setup without air integration: Shearwater Perdix.
- Multi-gas decompression: Shearwater Teric.
- Wireless tank pressure and a digital compass: Suunto EON Core.
- Price-first console setup: Aqua Lung I330R-2.
Product notes
Shearwater Perdix Wrist Dive Computer
The Shearwater Perdix is a direct match for a wrist computer explicitly sold without air integration. Its description identifies it as an OG Gen 1 unit used as a backup for tech diving, giving it a defined role for someone who wants the computer itself rather than wireless tank-pressure data. The limitation is physical condition and completeness: it is used, the housing has scratches, the screen protector may conceal deeper marks, the buckles have broken arms, and there is no box. The package is the computer alone, with blue bungees offered. Choose it for the Perdix wrist format when those condition details fit your setup.
Shearwater Teric Dive Computer Black 55mm
The Shearwater Teric is the highest-priced choice here, pairing a 55mm case size with a silicone band and a stated package containing an M/L band, genuine charger, case, documents, and carabiner. This gives it a defined hardware bundle for a diver who wants the named case size and included charging and carrying accessories. The limitation is that it is used, and the package wording says unlisted accessories, such as power cables, are not included. That makes the included-items wording important to the decision. Choose the Teric when its 55mm configuration and packaged charger, case, documents, and carabiner line up with your priorities; its $624.99 listed price is the upper end of this comparison.
Suunto EON Core Wrist Dive Computer
Suunto EON Core earns attention for readability and navigation: its description names a clear color display with large digits, a digital compass, wireless mobile connection, rechargeable battery, and customizable settings. The title also specifies a transmitter and USB, giving the package a concrete connectivity angle. Its limitation is condition: the unit is used. The listed white color is another identifying detail, but it does not change the central choice between a display-and-navigation package and another computer setup. Pick it when large digits, compass functions, and the named transmitter matter more than choosing the lowest listed price.
Aqua Lung I330R-2 Dive Computer
Aqua Lung I330R-2 is the lowest-price entry, and its description frames it as a 2-gauge console with a bright color screen, rechargeable battery, four modes, three nitrox mixes, Bluetooth, and compass compatibility. That combination suits a diver who wants a readable console and a mobile connection. The limitation is the stated console arrangement: buyers who specifically want wrist placement should weigh the other formats instead. Its title also calls out a quick disconnect, which is a concrete part of the setup. Choose it when the 2-gauge console and quick-disconnect wording match your equipment plan.
Final recommendations by use case
- For a wrist computer: Choose the Shearwater Perdix if the Perdix format and computer-centered setup suit your kit.
- For wireless tank-pressure information: Choose the Suunto EON Core, whose description explicitly names wireless tank pressure and whose title includes a transmitter.
- For multi-gas decompression: Choose the Shearwater Teric, which is specifically described with that function and a 55mm case.
- For a two-gauge console: Choose the Aqua Lung I330R-2 when its quick-disconnect format and console features fit the equipment plan.
The right choice comes down to setup before price: decide whether you want wrist placement, pressure information, decompression functions, or a console, then use the listed-price spread and condition details to make the final call.
