Dive Computer Expert Reviews
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Dive computer reviews are perfectly organized and consist of fully researched information and ratings of Aeris, Cressi, Mares, Oceanic, Sherwood, Suunto, Tusa, and UWATEC/ScubaPro brands. In Catalogue Section you may compare any models side-by-side and select dive computer according to your needs! Join thousands of happy customers!
Cressi Giotto incorporated best features of two well-known Cressi dive computers: Archimede 2 and Leonardo. We may enjoy very user-friendly interface and perfectly written user manuals, large display with easy to call any data, double gas mix support, perfect price-functionality ratio, possibility to build 3-guige console by adding compass and SPG... And I may continue this list!
This dive computer is suitable for divers with various certification - from the very beginners to those who already have had broad diving experience.
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Cressi Giotto has 3 control buttons on the front side of the dive computer. They are similar to Archimede 2, big enough and easy to press.
Giotto has only one bar graph - to display CNS toxicity level. Ascent speed and DECO warning is shown by displaying arrows at certain times.
Display layout is very intuitive and easy to read. It has main and alternative screens with all vital information at our disposal.
Setting Cressi Giotto is pretty straightforward and with well-written user manual that has easy to follow pictures - you shouldn't have any issues with that! From Pre Dive Screen by pressing the right button we may scroll through 9 sub-menus of this dive computer:
If diver has selected AIR mode - it will be possible to dive only with PO2 - 1.4 bar, and manually set Deep Stop to ON/OFF, Safety Factor and Altitude. When NITROX dive mode is selected - obviously diver may set related parameters FO2 - 21-99% and PO2 - 1.2-1.6 bar in addition to Deep Stop, Safety Factor and Altitude. To access the sub-menu (except HISTORY and PCLINK) - press and hold the central Mode button. In this way, by pressing the right button you move forward and by pressing the left button you go back to the menu scrolling through the data contained in it.
Following parameters may be manually adjusted during setting up process on this Cressi dive computer:
Before diving we may view our NO-DECO limits - bottom times and related depths, according to the nitrogen and oxygen intake from the previous dives, if any. To access the PLAN mode - keep pressing the right button until PLAN is displayed. Then enter this mode by pressing the central Mode button. Press right or left buttons to move between 9 m and 48 m with steps of 3 m. The screen will display NO-DECO times related to the different depths.
Cressi Giotto: Diving With Air & Nitrox
Like many other dive computers Cressi Giotto turns selected dive mode upon submersion to 1.2 m deep.
But it is always a good and safe practice to activate it before diving to check all correctly set parameters on PRE DIVE display. Display was very easy to read and all abbreviations were intuitive - just glance down to assess the dive conditions. On PRE DIVE screen dive computer shows following data:
When set for diving with Air, Cressi Giotto shows following dive data on display at NO-DECO mode:
I could call up alternative display by pressing the right button with following information shown:
During Nitrox diving this Cressi dive computer displays extra-data related to enriched air diving:
Dive computer is equipped with 2 vital alarms for controlling our Nitrox diving: High PO2 and High O2 (oxygen toxicity). Small bar graph with 5 segments represents level of oxygen toxicity. Before getting closer to the 100% computer will warn diver with flashing bar and audio. And if during our dive session all 5 segments light up - this means CNS toxicity reached 100%. Dive should be terminated in the sake of diver's safety.
Ascent rate indicator located on the central area of the display. It was constantly monitoring my ascent speed by showing 1-2 arrows in appropriate speed, or 3 arrows, audio and word SLOW if I went up faster than normal.
Switching gas mixes during a dive was very easy procedure. During my ascent at appropriate depth MIX1 symbol started blinking - I just press MODE button (central) and then pressed the right button to select 2nd mix. During this operation I had to keep MODE button pressed all the time to confirm the mix change. All operation took probably 5-7 seconds.
Just to test DECO mode I overshot my NDLs. Cressi Giotto reacted on this by warning me firstly, and then by changing display to DECO mode and giving me loud audio. Display had a standard set of data:
I didn't go further on this and didn't test dive computer for DECO violation - it wasn't on my list! So I would take everything related to DECO violation operation from CRESSI SUB words!
Cressi Giotto: Diving In GAUGE Mode
Besides diving with Air and Nitrox, Giotto has GAUGE mode as well.
In GAUGE mode dive computer works as a depth gauge and timer only and doesn't perform any NDLs and desaturation calculations. After completion dive in GAUGE mode - you shouldn't dive for the next 48 hours.
At this stage we may be interested in viewing and organizing our dive logs and history, connect Cressi Giotto dive computer to PC, plan our next dive, or even reset the system, if it goes for rent.
This Cressi dive computer has surface interval of 2 minutes, and if you reserfaced to the depth of approximately 1 m and then submerged again in less than 2 minutes - Giotto would consider this as a continuation of the previous dive. In this case - number of dives will remain unchanged and whole calculations would continue as for single dive.
Following modes are accessible on the surface, and as you may notice - we used all of them at PRE-DIVE stage to set up Cressi Giotto:
Cressi Giotto: What Divers Say
During our test dives with Giotto we didn't notice any negative issues. We didn't get to the stage of DECO violations, so there won't be detailed comments on that. Dive computer has only one violation (not like in Aeris, Oceanic, or Tusa brands, where we have conditional and 3 delayed violations). After that it locks and works as a clock only with possibility to access Logbook and History.
Also would be nice to have a DIVE SIMULATOR mode, as in Cressi Archimede 2. This function might be very useful for newbies, who just got their Giotto and wanted to become familiar with it in no time. But it shouldn't be considered as a negative thing, as Giotto is so intuitive and user-friendly!
Display layout is very easy to understand whether underwater or on surface. To read dive data - I had just to glance down to understand what's happening at the moment. And alarms are loud and clear - I didn't have any problems hearing them even with the hood.
In my opinion - size of the central button in Giotto is less convenient than it was in Archimede 2 (it has bigger MODE button). But it is still very solid and easy to press even with gloves.
PC connection was always steady. Giotto PC cradle holds dive computer quite firmly.
Cressi Giotto dive computer can be definitely a big winner around dive computers of similar class with its perfect price-specs-usability ratio. And it is well recommended dive computer to the very starters in diving and other recreational divers with experience, who don't require having high-tech instruments to simply enjoy diving.
So, if you are recreational diver or the beginner and want not only save your money, but at the same time have user-friendly dive computer which you will master in no time, and which will allow you diving in different scenarios - Cressi Giotto definitely should be your number one preference!