"Cressi Leonardo is Simple, Elegant and Functional"!

The Cressi Leonardo dive computer is a great beginner’s dive computer we use it in our training program here at Divers Supply . A single button interface makes it easy to program Air, Nitrox and Gauge modes the first time you pick the computer up. There are no complicated menus to choose from and the computer easily toggles between modes and simple menu options. The modes and menus are intended to be as simple and effective as possible,  the screen is 2 inches wide and constructed to be as easy to read as possible. It doesn’t use specialized abbreviations and has a numerical display large enough to be read with only a glance.  For those with a personal computer, the dive computer can be hooked up to a PC and logs of a dive can be stored with ease in a digital format.

Technical Capabilities

  • The nitrox levels can be set for oxygen levels between 21% and 50%. The PO2 limits can be set between 1.2 bars and 1.6 bars.
  • The operational maximum is 120 meters/393 feet. It is capable to be adjusted to altitudes up to 3,700 m / 12,139 ft.
  • The algorithm is Cressi's own RGBM (Reduced Gradient Bubble Model) and is based on the Haldane model. Cressi modified the Haldne and Wienke algorithm as a basis of their own.
  • This algorithm is capable to calculate safe decompression limits even if you are diving multiple times within a few days. The software continuously processes your body's Nitrogen absorption and release. It takes into account the quantity of inert gases in the different mixtures that you can use. It additionally allows to set safety factors to make the algorithm even more safe dive experience.
  • The Cressi Leonardo can be completely reset after each dive. This makes it a great choice for dive shops that rent it out and need to completely reset the data after the computer comes back.

Additional Features: 

  • Modes: Air, Nitrox and Gauge
  • Large Edge-to-Edge, High-Definition LCD Screen
  • Easy-to-See Battery Life Icon Indicator
  • Distinct Audible Alarms
  • Algorithm: RGBM Algorithm, Bruce Wienke/Haldane Model
  • Safe Decompression Calculations for Multiple Dives Over Multiple Days
  • Depth, Dive Times, Decompression Status
  • Ascent Rate and Surface Interval Times
  • Clock, Calendar and Temperature
  • 12/24 Hour Formats
  • Versatile Dive Memory (logbook): 60 Dives or 70 Hours On-Board Log
  • Dive Simulator Function
  • PO2 Value between 17.4 and 23.2 psi (1.2 bar and 1.6 bar)
  • (FO2) between 21% and 50% of O2
  • Imperial (feet) or Metric (meters) System Selectable
  • Reset Function for Multiple Users
  • Operational Depth: 0' to 393' (0 to 120 meters)
  • User Replaceable CR2430 3-Volt Battery
  • Altitude Adjustable Up to 12,139' (3,700 meters)
  • Back Light Feature for Low Light Conditions
  • Comprehensive Owner's Manual

Final Thoughts

Thanks for taking the time to read our Cressi Leonardo Dive Computer review, and hopefully you found it helpful. We highly recommend this to anyone looking to get their first dive computer.


  • Elegant look 
  • Great entry level dive computer
  • Large, easy to read display
  • Option to reset after each dive (Great for dive shops)
  • Low price point is great for first time buyers
  • Comes in a wide range of colors
  • Durable strap material


  • As to be expected from an entry model like the Cressi Leonardo does not have all the functionalities like a higher end scuba computer has. One item that is missing is for example that there is no compass.
  • In addition the Leonardo does not have an ability for air integration. This will not be a big issue if you are a recreational diver or just beginning to dive. However, it will not allow to have the computer grow with your experience and increased functionality needs.
  • It also would be nice to have a safety stop timer. Even though it features a safety stop alarm, it doesn't come with a timer to guide you in how long the safety-stop should last. Overall, not the biggest of issues but a nice-to-have.
  • The last downside (not really a missing functionality) is that the back light of the display is not bright enough. While diving in clear waters this is not really an issue but if it gets murky and dark you will need to have a strong backlight to see the data on the display.