Cressi Leonardo 2.0 Wrist Dive Computer

Cressi Leonardo 2.0 – Wrist Dive Computer for New and Casual Recreational Divers

The Cressi Leonardo 2.0 is a wrist-worn dive computer built around one idea: make the technology disappear so you can focus on the dive.

If you are newly certified, returning to diving after a break, or simply someone who dives for the pleasure of it rather than to push limits, this computer is designed with you in mind.

It is not loaded with advanced features you will never use. That is the point.

What It Does Underwater

The Leonardo 2.0 tracks the information that matters on a recreational dive: current depth, time underwater, how much bottom time you have remaining before you need to start ascending, your ascent rate, and the surface interval between dives.

All of that is handled by a Cressi RGBM algorithm, developed with physicist Bruce Wienke and based on the Haldane model with RGBM factors layered in. In plain terms, this means the computer is continuously calculating how nitrogen is building up and clearing from your body tissues, not just during a single dive but across multiple dives over multiple days. That matters on a dive trip where you are doing three or four dives a day.

The display uses what Cressi calls a PCD (Priority Compartment Digit Display) system. This means the most urgent piece of information at any given moment is shown in the largest, most prominent format on screen. You do not have to scroll through menus to find what you need. The computer surfaces the right number at the right time.

One Button. Three Modes.

The Leonardo 2.0 runs on a single-button interface, which is genuinely as straightforward as it sounds. You are not managing a multi-button sequence underwater while wearing gloves.

The three operating modes are:

• Air – standard recreational diving on compressed air, tracking no-decompression limits and depth.
• Nitrox – for enriched air diving, with adjustable oxygen percentage (FO2) settable between 21% and 50% O2, and a maximum partial pressure of oxygen (PO2) adjustable between 1.2 and 1.6 bar. If you are not yet diving nitrox, this mode is simply there when you want it.
• Gauge – turns the computer into a depth gauge and bottom timer, useful if an instructor or divemaster is managing the group's profile.

The Screen and Readability

The LCD screen runs edge to edge across the face of the computer, and the numerical displays are large. In low visibility or dim conditions, the backlight makes the screen readable without having to surface or wave a torch at your wrist.

A battery life icon sits on the display so you always know where you stand on power. The computer runs on a user-replaceable CR2430 3-volt battery, which means you do not need to send the unit away to a service center when the battery runs out. You change it yourself.

Between Dives and After the Trip

The logbook stores up to 60 dives or 70 hours of dive data, so a full week of diving is well within its capacity. Clock and calendar functions are built in, and you can set the display to either feet or meters depending on where you learned to dive.

The built-in dive simulator lets you plan a dive profile before you get in the water, useful for thinking through a new site or depth.

The computer is also altitude adjustable up to 12,139 feet (3,700 meters). If you are diving at altitude, say a mountain lake or a high-elevation resort, the algorithm adjusts its calculations accordingly. Most new divers will never need this, but it is there.

A Note on the Reset Function

The Leonardo 2.0 can be fully reset after each use. This is specifically useful for dive shops and rental departments that need to clear the computer's nitrogen loading data between different users. If you are buying this for yourself, you will not be resetting it between dives, but it is worth knowing the capability exists if you ever lend it out.

Who This Is Not For

If you are diving regularly with nitrox and want to log data to a computer or phone app after every dive, the Leonardo 2.0 does not have wireless connectivity or PC download capability based on the specifications provided.

If you are moving into technical diving, decompression diving, or multi-gas setups, this computer is not built for that. It has a maximum operating depth of 393 feet (120 meters) on paper, but its feature set is designed for recreational sport diving, not technical profiles.

For divers who want a capable, uncluttered wrist computer that handles air and nitrox, reads clearly at depth, and does not require a manual every time you want to change a setting, the Cressi Leonardo 2.0 is a sensible, honest choice.