Choosing dive computers & instruments is less about picking one model and more about matching the instrument to your setup: console or wrist, air integration, compass features, or multi-gas capability. The four choices span a $380.05 price spread, from a used, untested Suunto console to a used Shearwater wrist computer. Start with the function you will actually use, then weigh condition, format, and price.
Quick take
Format should narrow the field first. The Suunto Cobra entries are console choices, while the Shearwater Perdix is the wrist-format entry. Deep 6 frames its Excursion computer for recreational and technical diving, and the two Suunto titles explicitly use air-integrated language. The main decision is therefore console versus wrist, with gas-management detail and condition separating the options.
Listed-price comparison
| Product | Price | Price bar |
|---|---|---|
| Deep 6 Excursion Scuba Dive Computer | USD 199.00 | |
| Suunto Cobra Air Integrated Compass Console | USD 119.95 | |
| Suunto Cobra Air-Integrated Console, New in Box | USD 195.49 | |
| Shearwater Perdix Wrist Dive Computer | USD 500.00 |
Decision matrix
- For a new-condition purchase: Compare the Deep 6 Excursion with the Suunto Cobra marked New in Box.
- For a console setup: The two Suunto Cobra choices are the relevant entries.
- For a wrist setup: The Shearwater Perdix is the named wrist computer.
- For a compass in the product title: Choose the used Suunto Cobra Compass Console.
- For recreational and technical diving language: The Deep 6 Excursion is the matching title.
- For the lowest price: The used Suunto Cobra is the starting point, with "Untested" also appearing in its title.
Product notes
Deep 6 Excursion Scuba Dive Computer
The Deep 6 Excursion suits a diver who wants one computer to cover recreational and technical diving. It supports Nitrox from 20% to 99% across four gases, Helitrox up to 22% helium, Bühlmann ZHL-16C, user-settable gradient factors, and scuba, planning, apnea/free-diving, and gauge modes. Bluetooth, variable backlight, and fast charging add useful handling features. The limitation is price positioning: at $199, it is not the lowest-price choice in this group. Choose it when multi-gas and Helitrox functions take priority over minimizing the outlay.
Suunto Cobra Air Integrated Scuba Dive Computer Compass Console
The Suunto Cobra Air Integrated Scuba Dive Computer Compass Console w/ Case is the lowest-price route at $119.95 and combines two concrete title features: air integration and a compass. A protective case is also included. That combination suits someone prioritizing air-integrated instrumentation and underwater navigation in one console. The limitation is explicit: it is used and marked "Untested," so its condition differs from the new Suunto Cobra. The title also frames it as a console rather than a wrist computer. Choose it for the price and compass combination only if the used, untested status fits your buying tolerance.
Suunto Cobra Air-Integrated Scuba Dive Computer
The Suunto Cobra Air-Integrated Scuba Dive Computer - NEW in Box - Console is the straightforward choice when new condition and air integration belong together. It tracks tank pressure, depth, time, and no-decompression limits, while also offering Nitrox compatibility, audible and visual alarms, a user-replaceable battery, and a large display. The limitation is format: it is a hose-mounted console, not the wrist-format design named by the Shearwater Perdix. Its console orientation makes it a focused fit for divers who want air-integrated information in a new-in-box package.
Shearwater Perdix Wrist Dive Computer
The Shearwater Perdix Wrist Dive Computer - Black - Original OG, NO AI is the format match for shoppers specifically seeking a wrist computer. It has been used as a backup for technical diving and has 54 dives, with scratches reported on the housing and a screen protector over the display. The limitations are concrete: no air integration, broken buckle arms, no box, and only the computer included, with blue bungees offered for creating a strap setup. At $500, it is also the highest-priced choice here. Choose it for the wrist format and Perdix model identity, not for an air-integrated console.
Final recommendations by use case
- Multi-gas recreational and technical diving: Choose the Deep 6 Excursion for its four-gas Nitrox and Helitrox capabilities.
- New air-integrated console: Choose the Suunto Cobra Air-Integrated model marked New in Box; its title directly combines those criteria.
- Compass console at the lowest price: Choose the used Suunto Cobra Compass Console, accepting the "Untested" condition wording.
- Wrist computer without air integration: Choose the Shearwater Perdix Wrist Dive Computer, while accounting for the used condition and broken buckle arms.
The best match depends on whether your non-negotiable is a new package, console instrumentation, a wrist format, or multi-gas capability. These four choices make that trade-off visible before price becomes the deciding factor.
