Choosing among dive computers & instruments is a feature-versus-price decision: one diver may need wireless tank-pressure data, while another may want multi-gas decompression, a non-air-integrated backup, or simply a wristwatch computer. The four used choices below point in different directions. Match the capability to your actual dive role first, then weigh physical condition, included accessories, and the listed price.
Quick take
The cleanest way to narrow this group is to separate must-have functions from nice-to-have extras. Start with the dive role, then consider physical condition, named accessories, and price. All four are used, but the condition details are not identical: one mentions housing and buckle wear, while others define included accessories or a battery-and-seal update. That makes the product notes as important as the headline feature when choosing.
Listed-price comparison
| Product | Listed price | Relative listed-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 | |
| Suunto Zoop Dive Computer Wristwatch | USD 89.00 |
Decision matrix
- Wireless tank pressure and digital compass: Suunto Eon Core.
- 55mm case and multi-gas decompression: Shearwater Teric.
- Non-air-integrated backup: Shearwater Perdix.
- Wristwatch with new battery and seal: Suunto Zoop.
Product notes
Shearwater Perdix Wrist Dive Computer
The Shearwater Perdix suits a diver drawn to the original OG Gen 1 unit and its 54-dive history. The limitation is physical condition: scratches are reported on the housing, the screen protector is scratched, and the buckles have only one arm on the male end. It comes without a box, and the computer is the only included item, with blue bungees offered as a possible addition. Choose it for the original model identity and stated history, not for an intact buckle setup.
Shearwater Teric Dive Computer Black 55mm
The Shearwater Teric has a clearly named accessory set: silicone band, genuine charger, case, documents, and carabiner. Those included pieces give it a concrete reason to choose when a defined set matters to your setup. The limitation is its used condition, along with the explicit boundary that items not listed are not included. At $624.99, it is the highest-priced choice in this comparison, so the purchase should be driven by the attributes you need rather than price alone. That named accessory group gives the purchase a concrete scope.
Suunto Eon Core Wrist Dive Computer
The Suunto Eon Core offers a clear display-oriented reason to choose: it has a color display with large digits, plus a rechargeable battery, customizable settings, and wireless mobile connection. The tradeoff is its $450 listed price and used condition; it sits below both Shearwater choices and above the Suunto Zoop. The named feature set may be more than a shopper seeking only a wristwatch computer needs. Choose it when display detail and configuration matter, rather than selecting it for the wrist form alone.
Suunto Zoop Dive Computer Wristwatch
The Suunto Zoop has the clearest price-led case in this group, and its model is identified as Zoop. The wristwatch format is another reason to choose it when that form suits your diving. Its concrete limitation is the used condition and the fact that it has not been used recently. A new battery and seal were installed, which is a useful refresh detail, but it does not replace matching the computer to the functions you need. Choose the Zoop when its price and wristwatch design fit the role; the other choices target more specifically named functions.
Final recommendation by use case
- For wireless tank-pressure and compass functions: choose the Suunto Eon Core, which combines those named capabilities with a color display and large digits.
- For the 55mm, multi-gas route: choose the Shearwater Teric, whose title and description identify both attributes.
- For a non-air-integrated backup: choose the Shearwater Perdix, whose original OG model identity and physical-wear notes make the tradeoff clear.
- For the lowest listed price: choose the Suunto Zoop at $89, provided the wristwatch format and battery update fit the role.
