Mares Puck Pro Dive Computer Review

The Mares Puck Pro provides the basic features that are expected from an entry-level scuba diver computer. This in combination of its cheap price tag make it a great choice for beginners as well as experienced divers that want a backup to their more sophisticated device.

Mares had introduced the Puck in 2008. It turned the market upside down with its simplicity. The concept of a single button to navigate all functions was new and specifically new divers loved it. This is the successor of this original device and it has some great improvements.

Review Summary

Experience Level

Suited for the beginner or as a backup device for experienced divers.


Oversized watch style. Cannot be worn as a regular wrist watch.

Ease of Use

Super-simple navigation with single button.

Price Level

One of the most affordable scuba computers available.

We Like

  • Large and clean display
  • Simple to use
  • All features that an entry-level diver could need
  • Large log book to store dive information
  • Off Mode to take the computer out of dive mode completely
  • Personal dive profiles to adjust algorithm to be more conservative

We Don't Like

  • Too big to wear as a watch
  • Does not offer air integration


The Puck Pro from Mares is the successor of the very widely used Puck. It builds on the simplicity and easy of use of the original device yet improves where things could be improved. The simplicity is the outstanding feature of this entry-level dive computer. That, and the great price you can get it for. It doesn't have any advanced functionalities but none of those should be expected at this price point! Overall it's a great device for the beginner diver or if you're looking for a backup.

Puck Pro from Mares in black color

This is a quite large scuba computer. Some compare it to the size of a hockey puck. This does have advantages under water as it's easy to read the information on the display. It does mean though that you can't use it as an everyday watch.

It is available in a variety of colors:

  • Black
  • White
  • Yellow
  • Lime
  • Red
  • Blue


It might look like a wrist watch but it is a quite large device. It's over 2 inches in diameter and close to an inch thick.

The large size allows for a large screen that displays all important data without having to search for it. There are three different dive modes available:

  • Air
  • Nitrox
  • Gauge
Red Variant

​The large size allows to display all necessary information on the screen while still providing a great fit on your wrist. The single button navigation works great even if you're wearing thick gloves. However, it can be a little tedious to having to scroll through all options as you only have a single button to move through the different functions.

The display comes with a sufficiently strong backlight. The backlight duration can be set from 1 to 10 seconds to preserve battery.

It features audible and visual alarms:

  • Ascending too fast
  • Exceed safety for ppO2/MOD
  • Nitrogen saturation equal to 100%
  • Decompression stop violation
  • Low Battery

Technical Capabilities

The Puck Pro is capable of handling oxygen mixtures between 21% and 99% for Nitrox diving. You can adjust the pO2 levels between 1.2 bar and 1.6 bar. The max. depth is up to 150 meters (492 feet). Altitude adjustments can be made up to 3,700 meters (12,100 feet).

The underlying algorithm is based on the Mares-Wienke RGBM model. The conservatism of the algorithm can be adjusted through different settings. This increases the safety settings if you prefer to stay on more conservative and safer settings.

Dive Log and Connectivity

​The dive log has a capacity of up to 36 hours at a sampling rate of 5 seconds. This provides a reasonably sized log of your most recent dives. You have to wait until the data is overwritten as you can't delete from the dive log yourself. You need to transfer your dive log to a computer if you want to avoid data to be overwritten.

The USB connector is sold separately. It allows to transfer your dive data to a computer where you can analyze it further and use the data to plan future dives.

Missing Functionality

Any entry level dive computer like this one has features missing that are available in higher end devices. It is in line with pretty much all other basic devices and is missing capabilities like a built in compass and air integration.

Neither of these features will be missed by beginners and as this scuba diving computer is designed for that group it's not an issue that the functionality is not there. Unfortunately, this also means that you can't expand the capabilities of this gadget and will then later on have to upgrade to a different device. You can always keep the Puck as your backup scuba watch though.


  • Simple single button navigation
  • Large display to show all important information on the screen
  • Three dive modes for Air, Nitrox and Gauge
  • Audible and visual alarms
  • Nitrox settings between 21% and 99% with PO2 settings ranging from 1.2 to 1.6 bars
  • Mares-Wienke RGBM algorithm
  • Maximum operating depth 150 meters/492 feet
  • Four altitude settings up to 3,700 m (12,100 ft)
  • Supports both imperial and metric data display
  • Dive log up to 35 hours with a pre-set 5 second sampling rate
  • User replaceable Lithium battery (CR2450)
  • Six different colors
  • 2 year limited warranty

Pros and Cons

The Puck Pro by Mares is an excellent diving computer for a beginner or to use as a backup device for an experienced diver. It is built solid and will reliably work. Mares has done a great job improving on the already excellent Puck.


  • Great display to show all important data
  • Adjustable RGBM algorithm
  • Three different dive modes (Air, Nitrox and Gauge)
  • Easy connection to a computer
  • Simple navigation with single button interface
  • Easy to use even when wearing thick gloves


  • No built-in compass
  • Missing air integration
  • Too large to use as a wrist watch

​You get all functionality you would expect from an entry level scuba diver computer. It's missing the bells and whistles that can be found in more expensive devices like compass or air integration. This missing functionality is reflected in the rather low price of this scuba computer.

The dive log can't be purged which makes it not usable for dive shops that rent out computers. This is not really a negative factor assuming that many beginner divers will probably want to purchase their own device in order to build up their dive logs, etc.

Where to Buy?

Lowest prices as well as fastest delivery in combination with the best service are usually found at Amazon.com. Ordering the Mares Puck Pro at Amazon is not exception to this rule. You can find all available colors and accessories at the lowest prices.

Customer Feedback

You can find many comments online from other divers about this device. Overwhelmingly, the feedback is positive. The only issue we found in the reviews is that you need to replace the o-rings when you need to change the batteries. You should be aware of that so you can order them separately beforehand.

One other review stated that the dust cap on the battery compartment was not correctly placed when they received the device. They didn't know that at the time and when they went under water the battery compartment flooded and rendered the gadget useless. They could return it but you might want to check that the battery compartment is correctly closed before use!

Yellow version


The comparison chart below shows the differences between this computer, its predecessor the Mares Puck and the Cressi Leonardo. Check out our detailed comparison between the Mares Puck Pro and the Mares Puck!

Mares Puck

Mares Puck Pro

Cressi Leonardo

Mares Puck Diver Computer
Puck Pro by Mares in black
Cressi Leonardo Scuba Diving Computer - Black/Blue

Max. Depth

150 m / 492 ft

  150 m / 492 ft

120 m / 394 ft

Nitrox Capable

Free Dive Mode

Gas Mixes

1 gas
(Oxygen 21 - 50%)

  2 gases

(Oxygen 21 - 99%)

  1 gas

(Oxygen 21 - 50%)









Stainless steel





Log Size

~ 38 hrs

~ 36 hrs

~ 75 hrs

Visual Alarms

Audible Alarms

Battery Life (Avg)

1.5 years avg

1.5 years avg

  2 years avg


To conclude this review, it is a cheap yet reliable and efficient diving computer. While being an ideal choice for entry level divers, it could serve the purpose of a decent backup for experienced divers.

With such a low price, it would be a mistake to expect advanced features that are only present in high end devices. So before you make a buying decision, it would be a good idea to actually think about your requirements and then compare it with the pros and cons highlighted in this review. This will definitely help you in the decision-making process.

If you decide that the Mares Puck Pro is suitable for your needs then you will definitely be satisfied with your purchase. It provides all necessary functions and works reliably.​

Who is it not for?

​If you gained more experience as a diver and require features like a compass or air integration then this is not the right computer for you. You will have to look at higher end devices like the Suunto D4i Novo to provide such features.

The Mares Puck Pro does its name justice. It's puck sized and as such not usable as a watch you wear every day. On the bright side, this does allow for a large screen to display all important information. If you are looking for an entry level dive computer you can use as a watch then have a look at the Mares Smart.


Mares Puck Pro Infographic

​Use the code below to share the infographic on your site

Click Here to Leave a Comment Below 2 comments