Cressi Leonardo Air & Nitrox Diving Computer

Brand: Cressi
Product Code: KS770
Reward Points: 170
Availability: Item In Stock
This item is in stock and available for despatch. Orders placed on a working day before midday will be despatched the same day. Orders placed after midday or on a non working day will be despatched the folowing working day.
Price: £170.00
Ex Tax: £141.67
Price in reward points: 3400

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Cressi Leonardo Air & Nitrox Diving Computer

Leonardo first and only dive computer designed and built completely in the Cressi

The new CRESSI RGBM algorithm, developed by Bruce Wienke, has been adapted by Cressi for safe decompression computations in multi-day repetitive dives.

Tissues: 9 with saturation hemi-phases between 2.5 and 480 minutes;

”Dive” program: Full processing of dive data, even with decompression (if any), for any air or hyper-oxygenated mixture (Nitrox) dive.

Full setting of FO2 (percentage of the oxygen) and PO2 (partial oxygen pressure) parameters: PO2 may be set between 1.2 bar and 1.6 bar, FO2 between 21% and 50%.

A Nitrox dive may be carried out after an air dive (even with desaturation in progress).

Possibility of Deco (decompressive computations) or Gage program setting (depth gauge and timer).

Deep Stop can be enabled or disabled.

Large display with ”PCD System” for perfect understanding and readability of values.

Replaceable display protective cover.

Battery replacement can be carried out by the user.

Planning: Scrolling of the safety curve.

Unit of measure change from the metric system (meters and °C) to the feet system (ft- °F) by the user.

Sound and visual alarm systems.

CNS oxygen toxicity graphic indicator.

Backlit display.

Built-in calendar and clock.

Logbook (70 hours or 60 dives) including dive profile.

Dive history.

The instrument may be fully reset, in case of renting.

PC/Mac interface with simulator and dive profile (optional).

Technical Features


  • Algorithm: CRESSI RGBM algorithm.
  • Sample tissues: 9 with saturation hemi-phases between 2.5 and 480 minutes
  • Dimensions and weight: Diameter: 67 mm - Height: 27 mm - Weight: 135 g
  • Depth sensor:
  • Sea water setting (fresh water depths are about  3% lower)
  • Measuring field: 0-393 ft., measured every second.
  • GAGE function measuring field: 0-393 ft.
  • Precision: +/- 1% (T 20°C – 68 F).
  • Reading resolution: 10 cm (0 to 100 m) / 1 m (100 to 120 m) / 1 ft (0 to 316 ft)
  • Dive time: 0 to 255 minutes
  • Data acquisition frequency: 20 sec.
  • Resolution: 1 °F
  • Measuring field: 23 °F  + 104 °F
  • Precision: +/- 35.6 °F/10min change °T
  • WATCH:
  • Precision: +/- 50 seconds month average
  • 24 hours display
  • CR 2430 - 3V battery. 2 years average life (by 50 yearly dives).
    Leonardo by Cressi may be interfaced with a PC with the following specifications:
    OS: Windows/Mac
    CPU: Pentium II 266 Mhz or higher.
    RAM of at least  64 MB or higher (recommended).
    Video resolution: 800x600 or higher (recommended).


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