Cressi Leonardo 2.0 Underwater Single-Button Dive Computer - Beginner

In this review the Cressi Leonardo 2.0 is presented as a straightforward, entry-level dive computer best suited to new recreational divers who want reliable basic functionality without a steep learning curve. The single-button interface and a high-definition screen with large numerical displays make it easy to read and operate underwater, and the unit supports Air, Nitrox and Gauge modes with adjustable FO2 and PO2 limits for safe gas management. For divers who value simplicity and clear readouts, the Leonardo 2.0 is compelling; advanced technical divers will likely want more features.

Key Features

• Single-button operation: The single-button interface reduces complexity and makes mode changes and settings quick and intuitive for beginners and instructors.
• High-definition display: Large numerical displays improve readability underwater and help reduce task loading when checking depth, time and decompression status.
• Nitrox support: FO2 is adjustable between 21% and 50% and PO2 between 1.2 and 1.6 bar, allowing safe use with common nitrox mixes.
• Safety functions: Features like a CNS oxygen toxicity graphic indicator, audible alarms and a user-selectable deep stop enhance conservative dive management.
• Adjustable conservatism: Three user-adjustable conservatism levels let divers tune decompression tolerance to match experience and conditions.
• Replaceable battery: Powered by a CR2430 button battery with a battery life indicator and serviceable replacement by an authorized center to ensure watertight integrity.

Who It's For

The Leonardo 2.0 is aimed at beginner recreational divers, dive students and instructors who need a reliable, easy-to-read wrist computer with straightforward Air and Nitrox functions. Its single-button control and clear screen make it ideal for those still learning to monitor displays during a dive.

It is less suitable for technical divers or those who require advanced gas switching, multiple gas mixes during a dive, integrated wireless transmitters or a larger feature set. Photographers and divers needing a compact wrist profile should also check sizing, as some users reported the wristband feels large.

Pros & Cons

Pros

• Easy one-button operation makes settings and mode changes fast and simple.
• High-definition screen with large numerals improves underwater readability and situational awareness.
• Comprehensive safety cues including CNS indicator, audible alarms and deep stop option.
• Adjustable FO2 and PO2 settings support common nitrox mixes for recreational diving.

Cons

• Some users report the wristband fits large and may not suit all wrist sizes without adjustment.
• There are occasional concerns noted about long-term display durability compared with higher-end models.

Specifications

Brand	Cressi
Modes	Air, Nitrox, Gauge
FO2 range	21% to 50%
PO2 range	1.2 bar to 1.6 bar
Battery	CR2430 button battery (replaceable by authorized center)
Display	High-definition screen with large numerical displays
Made in	Italy

Our Verdict

The Cressi Leonardo 2.0 is a sensible buy for divers who need a simple, reliable dive computer with clear readouts and basic nitrox support. It offers strong value for new recreational divers thanks to its user-friendly design and safety features, though those wanting compact sizing or advanced technical functions should consider alternatives.

Frequently Asked Questions

Can the FO2 and PO2 limits be adjusted?
Yes, FO2 is adjustable between 21% and 50% and PO2 between 1.2 bar and 1.6 bar to accommodate common recreational nitrox settings.

Is the battery user-replaceable?
The device uses a CR2430 button battery that should be replaced by an authorized Cressi center to verify watertightness and maintain warranty and safety.

Is this suitable for technical diving?
No, the Leonardo 2.0 is designed for entry-level recreational diving; technical divers who need multiple gas switching or advanced decompression features should choose a more feature-rich computer.