Oceanic Pro Plus 4

At a glance

Oceanic Pro Plus 4 is a dive computer from Oceanic, rated 4.3 out of 5 and placed 23 of 33 in our dive computers shortlist. Its defining number is depth rating: 330 ft / 100 m. It scores hardest on build quality (77/100) and softest on packed weight (52/100). The clearest advantage divers report: large, easy-to-read screen even in low visibility.

What the dive computer actually gives you

Where it wins and where it costs you

Full review: Oceanic Pro Plus 4

The Oceanic Pro Plus 4 stands as a flagship dive computer designed for divers who want console-level readability without sacrificing wrist-mounted convenience, though it is most commonly configured as a hose-mounted console unit paired with a compass. At its core sits a dual-algorithm system that allows divers to switch between Pelagic DSAT and Pelagic Z+, giving flexibility for those who prefer more conservative or more liberal decompression modeling depending on their dive profile and experience level. The user-replaceable battery is a standout feature, eliminating the need to send the unit back to a dealer for costly battery swaps, and the extra-large, high-contrast digital display with user-selectable backlighting ensures that critical data remains legible even in low-visibility conditions, murky water, or during night dives.

Functionally, the Pro Plus 4 covers the full spectrum of what modern divers expect from a dive computer, including air, nitrox, gauge, and free-dive modes, making it versatile enough for recreational sport divers as well as those venturing into more technical or mixed-gas diving scenarios. Its nitrox capability allows oxygen mix adjustments from 21 to 100 percent, which is particularly useful for divers who regularly use enriched air to extend bottom time. The computer also offers a dive-planning mode that lets users calculate no-fly times, surface intervals, and repetitive dive limits before entering the water, reducing guesswork and enhancing safety margins. A built-in 3-axis digital compass adds navigational reliability, while audible and visual alarms alert divers to ascent rate violations, decompression obligations, and other critical safety thresholds in real time.

Built with a rugged, dive-ready housing, the Oceanic Pro Plus 4 is rated for depths well beyond typical recreational limits, reflecting its durability and reliability for repeated use in demanding underwater environments. Its menu system, while data-rich, is organized with large icons and straightforward navigation buttons, making it accessible even for divers who are not naturally tech-savvy. The unit logs extensive dive history, including depth, time, temperature, and decompression data, which can be valuable for tracking personal progress or reviewing dives after the fact. Overall, the Pro Plus 4 has earned a reputation among dive shops and instructors as a dependable, feature-rich console computer that balances advanced functionality with the kind of straightforward operation divers need when focus and safety underwater are paramount.