Cressi Leonardo 2.0 Review: The One-Button Default

The Cressi Leonardo has long been the computer divers point new buddies toward for one reason: it has a single button and it is cheap. The Leonardo 2.0 keeps that formula intact. This is the entry-level, one-button dive computer as a category, and this review -- built from manufacturer-published specifications and long-running owner consensus rather than a hands-on test -- is about where that simplicity is a genuine feature and where it becomes a limitation.

What the Leonardo 2.0 is

The Leonardo 2.0 is a wrist dive computer aimed squarely at new and budget-conscious divers, priced around $270. It runs Cressi's own RGBM-based algorithm across Air, Nitrox, and Gauge modes, uses a user-replaceable battery, and drives everything through a single button and a backlit segment display with large, legible digits. It is not trying to compete on features; it is trying to be the simplest capable computer a certified recreational diver can own.

The one-button interface

The single button is the entire pitch. For the job most recreational divers actually do -- glance at depth, dive time, remaining no-decompression limit, and the ascent-rate indicator -- there is nothing to fumble, which is exactly what a new diver managing task load wants. It is also forgiving with gloves for reading the core display.

The flip side is menu navigation. Setting a nitrox mix, adjusting conservatism, or changing altitude settings through one button is a press-and-hold routine that some owners find fiddly. For set-it-and-dive use that rarely matters; for divers who like to tweak between dives, it grates. Know which kind of diver you are before you buy.

Display and readability

The segment LCD is not color and not high-resolution, but it is large and backlit, and for the basics it is very easy to read -- a real advantage for divers who want big, clear numbers on a budget and do not need the graphical polish of a color computer. In low visibility, where fine graphical detail on a fancier screen can turn to mud anyway, the Leonardo's oversized digits are genuinely legible, and the on-demand backlight covers night and deep-water dives. It is the honest opposite of a premium AMOLED watch: less to look at, less to go wrong, less to pay for, and nothing on the readout you have to learn to interpret.

Algorithm and conservatism

The Leonardo 2.0 uses Cressi's RGBM-based model with adjustable conservatism and altitude settings, and sensible recreational defaults out of the box. It does not offer the fine gradient-factor tuning of a Shearwater Peregrine, and it does not need to for its audience. As with any computer, dive within your training and certification and treat the readout as an instrument, not a substitute for a plan.

The user-replaceable battery

For some divers this is the Leonardo's quiet advantage over sealed rechargeables: you can swap the coin-cell battery yourself or have a shop do it before a trip, with no charging cable to forget on a liveaboard. The counterpoint is care -- the battery hatch relies on an O-ring, and a rushed swap that pinches or dries out that seal is how these computers flood. Keep a save-a-dive O-ring kit in your bag and take the seal seriously, and the self-service design is a convenience rather than a risk.

What it doesn't do

Be clear about the ceiling before you buy. There is no air integration, no digital compass, no color graphics, no gradient-factor tuning, and no wireless log sync of the kind the premium computers offer -- logs come off it over a cable through Cressi's software. For its audience none of that is a dealbreaker, but if any of those features sit on your must-have list, the Leonardo is the wrong tool and you will feel the limit within a season. It does the fundamentals reliably and stops there, on purpose, which is exactly why it can be cheap and simple.

Battery life and trip logistics

The user-replaceable coin cell is rated for a long run of dives before replacement, and because there is no charging cable, the only trip prep is confirming you are not near the end of a battery's life and carrying a spare cell for a long liveaboard. That independence from a charger is a genuine, underrated advantage on remote trips where a misplaced proprietary cable can sideline a rechargeable computer for a week. The backlight is on-demand rather than always-on, which is part of how a small coin cell lasts as long as it does.

Who the Leonardo 2.0 is for

The Leonardo 2.0 is a sound choice for a newly certified diver on a budget, a rental fleet that needs bombproof simplicity, a reliable backup computer, or a gift for someone just starting out. For those buyers it is an easy recommendation -- check the current Cressi Leonardo 2.0 price to see where it lands. It is not the pick for a diver who wants color, air integration, or a compass, or who expects to move toward technical diving soon -- that diver should stretch to a Shearwater Peregrine they will not outgrow.

Alternatives

At the same budget end, the Mares Puck Pro Ultra is the other simple, reliable entry computer worth cross-shopping, and the rental-standard Suunto Zoop Novo is the proven workhorse many divers learned on. If you are weighing the whole entry tier, our best dive computer picks and the Suunto Ocean review show what stepping up buys you.

Verdict

The Leonardo 2.0 does exactly one job and does it cheaply: it gives a new diver a legible, dependable, no-fuss computer for around $270. Know the trade -- one-button menus and a segment display instead of color and features -- and it is an easy first computer to recommend. Just be honest about whether you will want more within a year or two; if you will, buy up front. To organize the rest of a first kit around it, our pre-dive readiness tool builds a gear list and tracks service dates.