A Review of The Cressi Giotto Dive Computer

The Cressi Giotto is the second dive computer to be built fully in-house in Cressi’s factory. It has a really nice screen and is really easy to read from. It’s also got completely new circuitry and electronic insides, which gives it a nice low profile fit to the wrist as well.

The Cressi Giotto also comes in a range of colors. The one we got hold of was blue – in this review we’re just going to run the menu systems and show you some of the features that are on the computer.

In and Outs of The Cressi Giotto Dive Computer

The Giotto can be turned on/off at will. Prolong the battery life by turning it off completely, and the screen goes off immediately.

Pushing one of the buttons will bring it into its standby or idle screen. It also shows you what your safety factor setting is. It can also look at your expected depth and time allowance based on previous dives, as well as the gas mix. You can turn gauge mode on too, so it will only display your current depth, maximum depth, and dive time.

Now, looking at the PC link and the history of the dive computer, it will tell you how long you’ve been diving for as an overall maximum depth and other such things. And systems are in here too – it will show you your serial number for a dive computer.

Obviously, you can go in here and change the unit, so from Celsius and meters to Fahrenheit and feet, and then back to the main menu.

Cressi Giotto Dive Computer Menus

Next, we’ll go into some of the different menus. In “Mode”, we go in and change one of the menus, push in the middle button and the changeable options start flashing.

We can change the gas, so I can change it into nitrox mode. If I wanted to select nitrox, I would hold down the center button and that’s set.

Moving on, we can change the time settings. We would push it and we can see what can be changed in this menu. First is the year. Hold down the center button, which will set it.

Again, we can move left and right to change the different modes and set the different changeable options. Choose the one you want, then press the center button.

Next, we moved up and down, and then held it to set it. This basically cycles through each of the changeable options again and again until you’ve found what you want.

And then to get out of that menu, you just hold down the center button and you’re back out and into the menu system. Gauge mode, again, is simple. Push it to select it and you get the flashing option. Change it to the option you want, then hold it down. Set.

In the system setting, this is exactly the way you can change the units. Pushing again to change Celsius and Fahrenheit. It just works on a very simple button change. Very, very simple.

Hold down “Select.” Hold down again and it’ll take you back out. And then it’s back to the main screen. You do have the extra ability to make it more sensitive, too.

Personal Changes

You can change the safety factor to give you less time in the water without sacrificing nitrogen loading safety. You can change the attitude as well. All through these menu systems, it is really, really easy to get to grips with.

What to Look for In A Dive Computer

If you’re looking to buy your first or even your second dive computer, it can be a bit of a minefield, because there are so many different dive computers out there. And that’s because there are so many different types of scuba diver out there. So how do you know which one is for you?

This is a quick guide just to help you understand what the different types of dive computer are and what pros and cons they have for you.

1

Snorkelling

We’re just going with the snorkelers, the apnea, and the free divers. You get dedicated free-diving watches – these typically are watch-sized dive computers that are a bit more streamlined. But all these do is free diving. There’s no complicated scuba diving algorithms in them or different menus.

They basically tell you how deep you went and how long you were down for. A few of them have a few alarms which work out how safe you can be in the water – how long you can go down, the interval between your dives etc.

These ones are dedicated free dive computers. If you try to take them scuba diving, then they just won’t work because they don’t have the algorithms built into them.

But If you’re just looking for a free diving computer, then these can be a lot cheaper to buy and you don’t have any of the complicated scuba diving algorithms put into them.

2

A Level Up

On from that and moving on to scuba diving – what most people start off with are kind of large screen, or puck-sized dive computers. Shaped like a hockey puck, and about the same size, they have a nice big screen.

They’re usually pretty easy to use, but they tend to have segmented display. Not particularly the easiest to convey really complicated information.

But for the real basics, they’re pretty simple. They tell you how deep you are, how long you can stay down there, and how long you’ve been under the water. They tell you everything that you need, as well as having a decent sized screen.

What they also tend to have is a long strap on them, so a lot of people see this and can get confused.

Why do they have such a long strap? That’s so it can go over wetsuits or even a dry suit. Don’t to cut off any excess because you might end up diving in a dry suit and then find you need that extra long strap. These typically are have changeable batteries too.

On the underside, you’ll have a pretty simple battery case, that you can change yourself – you can always bring a spare battery along with you. A lot of the watch size dive computers, you have to bring into a dive center to have them change it for you.

Puck-sized dive computers are great for entry level scuba all the way up to quite advanced scuba diving nowadays. They have nitrox and many other things built into the

They also have very safe and conservative algorithms, so they’re going to keep you safe in the water. Of course, they have either a back-light or a glow in the dark screen and they have audio alarms to tell you if you’re doing something wrong too.

3

A Little Smaller

Okay, a step up from these would be a watch sized dive computer. These are divers that have very good eyesight. If you don’t need a big screen, then you can get away with a smaller size screen obviously.

They’re also great because you can just wear them all day and to the office, and you can wear them to the park, to the gym and on the dive sites – they don’t really stand out.

A lot of them have multi-sport functions built into them. They look like a conventional wristwatch. But, of course, they have the pressure sensor and everything integrated too, and the same features as the as a puck-sized dive computer.

4

Console Mounts

After this is a console-mounted dive computer, which attach to your regulators. These replace your submersible pressure gauge, and screw into your regulator, one of the high- pressure ports, and then your dive computer is fitted to your regulator.

This has a few benefits – the first one is obvious; it takes your cylinder pressure and it puts right there on the screen, acting as your pressure gauge.

This reduces the amount of clutter. You don’t have to have a big clunky computer on your wrist; a lot of them are quite clever. They work out your breathing rates based on how deep you are, how fast you’ve been breathing and how much gas you have left in the cylinder.

They can also tell you exactly how long your air is going to last in minutes – instead of just oh you’ve got 104 bar, it will tell you precise times. This is very handy and definitely a contender to look at.

5

Something for Technical Divers

If you’re thinking of moving onto technical diving, then you need to get a technical dive computer. These are more flexible on the insides.

They allow you to customize all of your sections on the inside, whether it’s your gradient factor for your decompression theory or your gas mix.

These will then start including try mixers, and wells if you’re diving with helium. These are ready for advanced divers, but you can start off with one of these and just dive on air and then eventually progress to technical diving in the future.

If you’re thinking of moving onto technical diving, then you really do have to get a dedicated dive computer.

A few optional extras that you get with some dive computers are an extension strap or integration into your desktop PC. Older dive computers have their log books that record your dives.

6

Added Extras to Dive Computers

Modern dive computers are wireless but some still come with a USB cable. Some have that ability but they don’t come with the cable, and you’ll have to buy that separately. Wireless air integration is a handy little accessory. A lot of dive computers will be wireless enabled.

Much rarer is a heart rate monitor belt. Some dive computers, such as the Mantis 2, will take your heart rate and your skin temperature into account in its decompression algorithm, working out exactly how hard you’re working and how warm or how cold you are, adjusting your decompression algorithm accordingly.

That way it’s not being overly cautious, and not being vague and having a basic decompression algorithm. It’s actually tailored to you and your specific dives, meaning that you can stay down longer or that it’s going to get you out of the water faster to avoid decompression.

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So How Good Is the Cressi Giotto Dive Computer?

The Cressi Giotto is a great recreational dive computer for decompression use.

It gives decompression stops and stop times that make it easy to use. This is great for entry-level divers and anyone that finds it more difficult to see other dive computers because of the small numbers.

This also has a very large and clear display. All of these make the Cressi Giotto Dive Computer great for any entry-level diver.

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