Trail Gear Advisor

Dive Computers & Instruments: Choose Air Integration, a Compass, or Multi-Gas Controls

Compare four dive computers and instruments by condition, console format, compass wording, and multi-gas features to match the right choice to your diving priorities.

Last updated Aug 26, 2026

Choosing dive computers & instruments is less about finding one all-purpose answer than matching the instrument to your priorities. The four choices span used and new units, with different title and description emphases. Their prices cover a $180.05 gap. Start with condition, then match named functions to your planned diving. That keeps price from deciding before you consider the "Untested" wording attached to one Suunto option.

Quick take

  • If condition comes first: separate the used entries from the two products marked new.
  • If price comes first: use the comparison below, then weigh the condition wording.
  • If function comes first: use the decision matrix to narrow the choice before comparing finer details.

Listed-price comparison

ProductListed pricePrice bar
Aqualung i330R 2 Gauge Scuba Dive Computer Plus CompassUSD 300.00
Suunto Cobra Air Integrated Scuba Dive Computer Compass Console w/ Case UntestedUSD 119.95
Suunto Cobra Air-Integrated Scuba Dive Computer - NEW in Box - ConsoleUSD 195.49
Deep 6 Excursion Scuba Dive Computer for Recreational and Technical Diving NewUSD 199.00

Decision matrix

Use this as a fast filter rather than a ranking:

  • Lowest-price route: Suunto Cobra Air Integrated Scuba Dive Computer Compass Console w/ Case Untested. The title includes compass and case wording, while "Untested" is an important condition signal.
  • New-in-box Cobra route: Suunto Cobra Air-Integrated Scuba Dive Computer - NEW in Box - Console. The title and condition point to a new, packaged Cobra console.
  • Two-gauge plus compass route: Aqualung i330R 2 Gauge Scuba Dive Computer Plus Compass. Those functions are stated directly in the product title.
  • Gas-planning and mode route: Deep 6 Excursion Scuba Dive Computer for Recreational and Technical Diving New. Its description names multi-gas Nitrox, Helitrox, and several dive modes.

Product notes

Aqualung i330R 2 Gauge Scuba Dive Computer Plus Compass

Aqualung i330R 2 Gauge Scuba Dive Computer Plus Compass

The clearest reason to choose this Aqualung is its bright color screen, described as readable even in sunlight, paired with a rechargeable battery. Bluetooth, four modes, and three nitrox mixes add more named functions for shoppers considering the i330R. The tradeoff is straightforward: it is used and carries the highest listed price among these four. The description also says it had a full service and has not been used since, but that detail does not change the stated condition. This fits when screen readability and rechargeable operation matter more than minimizing the purchase price.

Suunto Cobra Air Integrated Scuba Dive Computer Compass Console w/ Case Untested

Suunto Cobra Air Integrated Scuba Dive Computer Compass Console w/ Case Untested

The strongest reason to consider this Suunto is its air-integrated wording. That gives the lower-priced choice a clearly named console format to weigh. Its limitation is central rather than cosmetic: the title says "Untested," and the condition is used. Choose this Cobra when air integration and a lower outlay fit the plan; leave it aside if an untested used instrument is not acceptable. The title also includes compass and case language, giving shoppers additional product-specific details to consider without treating them as a substitute for the stated condition.

Suunto Cobra Air-Integrated Scuba Dive Computer - NEW in Box - Console

Suunto Cobra Air-Integrated Scuba Dive Computer - NEW in Box - Console

New-in-box condition is the central reason to choose this Cobra. The description also names tracking for tank pressure, depth, time, and no-decompression limits, along with audible and visual alarms and a user-replaceable battery. The limitation in a direct Suunto comparison is the $75.54 gap above the used Cobra with compass and case. That difference is concrete, while the title presents this unit as a console and NEW in Box. Choose it when new condition and the named monitoring functions matter more than the lower-priced used route.

Deep 6 Excursion Scuba Dive Computer for Recreational and Technical Diving New

Deep 6 Excursion Scuba Dive Computer for Recreational and Technical Diving New

Deep 6's reason to choose is the practical detail around use between dives: Bluetooth for logging and updates, a variable-brightness backlight, and fast-charging mode are all named. Its limitation is a $3.51 gap above the new-in-box Suunto Cobra, with a listed price of $199.00. The Excursion is identified as new and as a model for recreational and technical diving, so the choice comes down to whether those charging and logging details fit your routine. It is not the lowest-price path, but its named functions give the decision a clear basis.

Final recommendation by use case

  • Lowest cash outlay: Choose the Suunto Cobra Air Integrated Scuba Dive Computer Compass Console w/ Case Untested at USD 119.95. The compass-and-case wording is concrete, but "Untested" makes condition the deciding caveat.
  • Named tank-pressure and depth tracking: Choose the Suunto Cobra Air-Integrated Scuba Dive Computer - NEW in Box - Console at USD 195.49. Its description makes the monitoring functions specific.
  • Screen and rechargeable operation: Choose the Aqualung i330R 2 Gauge Scuba Dive Computer Plus Compass. The bright color screen and rechargeable battery are the key reasons, while used condition and the highest price are the tradeoffs.
  • Gas planning and multiple modes: Choose the Deep 6 Excursion. Its multi-gas Nitrox, Helitrox, and multiple modes match that priority without relying on a price-based claim.
Products in this article
Aqualung i330R 2 Gauge Scuba Dive Computer Plus CompassUSD 300.00View on eBaySuunto Cobra Air Integrated Scuba Dive Computer Compass Console w/ Case UntestedUSD 119.95View on eBaySuunto Cobra Air-Integrated Scuba Dive ComputerUSD 195.49View on eBayDeep 6 Excursion Scuba Dive ComputerUSD 199.00View on eBay
Aqualung i330R 2 Gauge Scuba Dive Computer Plus CompassUSD 300.00View on eBaySuunto Cobra Air Integrated Scuba Dive Computer Compass Console w/ Case UntestedUSD 119.95View on eBaySuunto Cobra Air-Integrated Scuba Dive ComputerUSD 195.49View on eBayDeep 6 Excursion Scuba Dive ComputerUSD 199.00View on eBay

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