Cressi Nano Black Dive Computer

At a glance

Cressi Nano Black Dive Computer is a dive computer from Cressi, rated 4.3 out of 5 and placed 19 of 33 in our dive computers shortlist. Its defining number is depth rating: 120 m (394 ft). It scores hardest on packed weight (86/100) and softest on comfort and fit (65/100). The clearest advantage divers report: very compact and lightweight on the wrist.

What the dive computer actually gives you

Where it wins and where it costs you

Full review: Cressi Nano Black Dive Computer

The Cressi Nano Black is a compact, wrist-mounted dive computer designed for recreational divers who want reliable performance without the bulk of larger dive instruments. Its slim profile and lightweight construction make it comfortable to wear both underwater and as an everyday watch, while the black finish gives it a sleek, understated look that appeals to divers who prefer a low-profile piece of gear. Despite its small size, the Nano Black packs in a full suite of dive-planning and monitoring functions, including air, nitrox, and gauge modes, making it versatile enough for divers progressing from basic open-water dives into more advanced nitrox diving.

At the heart of the Cressi Nano Black is Cressi's proven Haldanean algorithm with nine tissue compartments, which calculates no-decompression limits and tracks nitrogen loading with the same reliability found in Cressi's larger, more advanced computers. The display is user-friendly, showing critical data such as depth, dive time, ascent rate, and remaining no-stop time in a clear, easy-to-read layout even in low-visibility conditions. Divers can switch between two nitrox mixes during a single dive, and the computer's audible and visual alarms provide timely warnings for ascent rate violations, safety stop reminders, and decompression obligations, helping to keep dives both safe and enjoyable.

Built to withstand the rigors of regular diving, the Cressi Nano Black features a durable, water-resistant casing rated for recreational depths, along with a battery that's user-replaceable, saving divers the hassle and cost of shipping the unit back for professional battery changes. The intuitive two-button interface simplifies menu navigation, allowing quick access to logbook data, dive history, and settings adjustments without needing to consult a manual repeatedly. Whether used by a newly certified diver seeking a dependable first computer or an experienced diver wanting a compact backup unit, the Cressi Nano Black delivers dependable dive monitoring in a small, wrist-friendly package that fits seamlessly into any scuba diving gear setup.