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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!


Mares Nemo Wide - Your Brilliant Dive Buddy In The Wide World Of Diving!

Mares Nemo Wide - Your Brilliant Dive Buddy In The Wide World Of Diving!

Mares Nemo Wide is easy to set up and read dive computer. Huge display, sharp digits, 3 dive modes & 3 Nitrox mixes. Perfect choice for beginner or recreational diver and for mature diver who needs reading glasses and requires a big display to see it clearly while diving at night or at greater depths.

General Information
User Interface
Your Review



Mares Nemo Wide is very distinctive from its fellows dive computers. It is stylish and weightless on your hand and only 2 centimeters thick. It is designed as a wrist unit, and not as a dive watch computer. It has huge monochrome display with option of contrast adjustment, big and very easy to read numbers under very different angles of view. You may add to this solid mineral glass, which abolishes need of the screen protector.

Dive computer has long plastic strap with reliable fastener that gives you possibility to settle it very comfortably on any diving suit – whether you wear wet or thick dry.


Mares did a very nice upgrade to Nemo Wide not long time ago: now we have dive computer that supports 3 Nitrox mixes with FO2 21 - 99% for Mix 2 and 3. That's one of the coolest things about it!


Dive computer has 4 big buttons that are easy accessible even if you wear thick gloves while diving in cold water. Easy to understand and intuitive interface gives you quick access to all functions.

It is set up ergonomically very well! I wish it had wireless transmitter and hoseless air-integration! But even without this option – Nemo Wide is ‘cool’!

It's recommended dive computer for the very beginners in diving and advanced recreational divers who tend diving with technical gas mixes!


Mares Nemo Wide Features Card

Copy this Mares Nemo Wide Key Features & Alarms Card for your Reference and Share with your friends and buddies!



Benefits of using Mares Nemo Wide dive computer

  • you will get very intuitive dive computer and learn it fast, thanks to easy to understand manual and user-friendly setup;
  • you will have instrument with support for up to 3 Nitrox mixes with FO2 up to 99%;
  • you will get dive computer with huge and easy viewable at the different angles and depths display;
  • you will have dive computer with big buttons that are easy to press even with thickest gloves;
  • you will be able to customize Mares Nemo Wide dive computer in many ways to suuport your specific needs in diving;
  • you will be able to submerge down to 150 meters;
  • you will be able replace battery yourself very easy;
  • you can save a substantial amount of money, as Mares Nemo Wide costs much less than other dive computers with similar characteristics








User Interface
4 buttons
Dive Modes
Air, Nitrox, Gauge
Integrated Digital Compass
Mares - Wienke RGBM
Number of Gas Mixes
Air, 21% - 99%
1.2 - 1.6 ATA
Air Integration
Safety Stop (SS)
Deep Stop (DS)
Conservative Factor
Altitude adjustment
P0/P1/P2/P3 (0 to 3700 meters)
Gas Switching
Dive Planner
12 - 48 meters
Logbook Capacity
40 dive hours maximum
Max Operational Depth
150 meters
Backlight duration
4 sec
Sampling Rate
20 sec
User Replaceable Battery
Data Retention or battery 'hot swap'
PC Interface
2 years










Dive computer has 4 control buttons and 1 bar graph that represents speed of your ascent.

Display is large and data is easy to read, buttons are big and there won't be any troubles of pressing them, even if you have the thickest gloves!







Before all, we adjust time format, current time and date from WATCHSET mode, and then we will set parameters for diving.

Set Dive menu consists of two submenus – SET DIVE – DATA and SET DIVE – MODE.


Mares Nemo Wide Settings Card

Copy this Mares Nemo Wide Fine-Tuning Card for your Reference and Share with your friends and buddies!


There are not too many parameters to set, so we will make it fast! Instrument has user-friendly and intuitive interface - no strange buttons combos, no digging deep down into the manuals to find out the least detail!







Mares Nemo Wide: Diving With Air & Nitrox

During diving you will see different displays with information available according to the type of each diving condition – whether it is Air or Nitrox and have No-Decompression or Decompression situations, or use Nemo Wide as a Gauge, and have a different set of displays as well.


Mares Nemo Wide NO-DECO Card

Copy this Mares Nemo Wide No-Decompression Display Card for your Reference and Share with your friends and buddies!


When you reach certain conditions, dive computer may give you Safety Stop prompt or series of 1 minute Deep stops in decompression dives, or if you are close to exceeding No-Decompression Limits.

After you started ascending, dive computer starts monitoring your ascent rate and notify you if the rate of ascent is more than 12m/min (39ft/min) – it gives you message SLOW on the display bar and audible alarm goes on. Alarm continues until you ascend slower and your ascent rate will be in maximum allowable range.


Mares Nemo Wide monitors our PO2 and CNS toxicity level. If we exceed maximum level of certain PO2 by descending deeper - dive computer will activate an alarm and to make it silent we need to ascend to the depth where PO2 will be in the limit we set. If during a dive oxygen toxicity level hits 75% - computer will activate High O2 alarm. During a dive you will see %CNS value shown on the display.

It may happen that we exceeded No-Decompression Limits, and in this case dive computer turns Decompression mode.


Mares Nemo Wide DECO Card

Copy this Mares Nemo Wide Decompression Display Card for your Reference and Share with your friends and buddies!

Mares Nemo Wide manages Decompression stops by graphically displaying two triangles (arrows). And you must follow the prompts of this dive computer to stay at the certain depth to avoid of the danger of the Decompression Sickness (DCS).

If we exceed Decompression Stop for 1 meter and stay at shallower depth for more than 3 minutes - computer activates Omitted Stop mode and locks for this mode for 24 hours. During that time it will function as a depth gauge and timer only.


Mares Nemo Wide: Diving In GAUGE Mode

Next dive mode of Nemo Wide is Gauge. In this mode dive computer operates as a depth gauge and timer only and doesn’t calculate No-decompression Limits and Decompression-stops times. Below you see representation of dive data displayed in Gauge mode:

  • Elapsed Dive Time (EDT);
  • current depth;
  • Ascent rate;
  • time;
  • temperature etc.


By pressing ENTER and PLUS buttons you will get maximum depth reached during a dive, and view the preset dive parameters settings.


Back to Top







After we finished our dive with Nemo Wide and appreciated its features, functions, and user-friendly interface, it is time to have a look at post-dive functions. And below are short descriptions of them:

  1. Dive Planner – you will be able to scroll through the No-Decompression Limits, regarding of the current residual nitrogen from previous dive. Dive Planner's range of depths is 12 - 48 meters;
  2. Log Book consists of summary history of all your dives, technical data of each individual dive, and profiles of your dives with 20 seconds interval and can hold maximum 40 dive hours;
  3. PC mode – this mode allows you to set up interface and transfer data from Logbook to a PC.
  4. Time to Fly countdown timer;
  5. Desaturation countdown timer







Mares Nemo Wide: What Divers Say


  • support for 3 Nitrox mixes;
  • buttons are very easy to press;
  • may be recommended dive computer for divers with impaired eyesight, thanx to its huge display;
  • replacement battery is neither expensive nor difficult;
  • well designed and easier to read than Suunto models;
  • digits are big, sharp and clear seen underwater;
  • easy to understand manual;
  • huge and easy viewable at the different angles and depths display



  • interface cable is overpriced;
  • documentation should be organized better;
  • quite conservative dive computer


From our review you may see that Mares Nemo Wide is easy to set up and use. Big display has all vital information clear visible and intuitive, big buttons are easy to press to call out additional dive data.

If you are a beginner or recreational diver, if you are mature diver who needs reading glasses and requires a big display to see it clearly while diving at night or at greater depth – in this cases Nemo Wide dive computer is for you!


Mares Nemo Wide dive computerMares Nemo Wide
Dive-Computer-Wizard Rating
golden star golden star golden star golden star


If you are a person who doesn’t mind to add more conservatism to your diving activities and do not need air integration - you may consider investing in Mares Nemo Wide. It is a perfect combination of specs, functions and price!



Add comment
Richard, 26 November 2016 23:26
Hard to read Mares Nemo Wide display with protective screen on it

Bought it because I'm getting older and longer sighted.

I see well underwater, but not so easily close up. So I thought the big numbers would be good. But I am disappointed that, especially with the screen protector on, the Nemo Wide is not easy to read. The background is darker than the illustrations show and that means the numbers don't stand out very well. Add to that, there are some very tiny icons/letters identifying the numbers, which are utterly unreadable to me underwater. So unless I memorise what the big numbers in the different positions mean, this computer is very frustrating. And the software offered (Divers Diary) is primitive.

However the unit works flawlessly I must say. It's just that it is a pain in the ass for me to read underwater.

Pablo, 5 June 2013 22:14
The Best Dive Computer I Ever Used!

500 dives were logged on my beautifull Mares Nemo Wide and counting!

I fell in love with this piece of my dive gear since the first day I had it and the first dive I made with it! 3 gas mixes in support, huge viewing area, large buttons, user-friendly interface and good user documentation! What else we may dream of!

Mares Nemo Wide has fully customizable number of parameters - so, it's great for every type of diving (except with Helium, of course). PC interface works well and I didn't mind to pay extra for that!

Price for the whole package is a Godsend! I recommend Mares Nemo Wide to every diver!

Fred, 14 April 2012 08:37
Easy To Read Display In Mares Nemo Wide

I have the similar story! I had before Aeris Elite and when my eyes became older and sometimes it was difficult to see small numbers on Elite's screen - I replaced it with Mares Nemo Wide.

Elite was a good dive computer, but I wanted to have something with big screen and sharp digits - just to glance down and I know where I am at the moment! And it wasn't too big deal for me to lose my wireless - I didn't use it very often anyway, because it wasn't steady sometimes!

Pele Muljono, 5 February 2012 06:35
Nemo Wide - Big And Easy To Read Display

Mares Nemo Wide has large display and it helps me reading dive data much easier than my previous Suunto Stinger that had smaller screen and it was more difficult to see the information.

I am an underwater photographer and always busy with my underwater cameras and strobes. But with Nemo Wide I do not have any problems in interpreting data even with my eyesight + 2.

Mark, 27 August 2011 03:45
Tricky Coding

I remember myself, when I just had my Nemo Wide - I was completely puzzled with the way they coded text messages.

Nemo Wide was my first dive computer back then and I couldn't understand - what it wanted from me! But now - it is all OK, we became very good friends!

Wade, 25 August 2011 12:40
The Great Mares Nemo Wide

I started my research on the dive computers and narrowed my choices down to the Nemo Wide because of the large font screen and wide viewing angle(170 degrees), ease of use and the ability to download dive info to my computer and add comments for my dive log.

I eagerly anticipated getting the Nemo and reading the instructions so I could become familiar with this new piece of equipment.


Much to my dismay I have found that the font display especially with the letter "T" is more like an incomplete letter "E" without the top horizontal bar. It is very difficult to read and in the water when you need critical information at a glance I see it as a potential problem. Perhaps there is a software fix for this issue!

Also the screen display mixes capital letters with lower case letters in one word which does not jive! (ex: dEEPStOP, dAtA, FASt ASC, SALt, rESEt)


Great looking dive computer, but the Italians need to get this part of the program straightened out! Also you need to offer the download software for the Mac.

Hey, if you look at the largest professional dive organization PADI, all their ads and pictures show an Apple MacBook in use. Just a thought!


Wade Saleeby PADI Divemaster

Nags Head, North Carolina

Tom, 3 June 2011 12:50
Mares Nemo Wide - Great Display, Friendly User Interface

This is one of the most user friendly dive computer! Very easy to learn and use all the functions and user interface.

Large and easy to reach, press and operate buttons. It's easy to navigate, easy to view, excellent and loud alarms.

I love my Nemo Wide unit, and for the price-functions, it can't be beaten. Great visibility at day and night, correct readings, not too conservative, very customizable, support for up to 3 Nitrox mixes, just awesome unit for the price!

Sadri, 19 November 2010 00:07
Inconvenient Last Deep Stop With Nemo Wide

Nemo Wide starts the Decompression countdown at the depth of 3 meters and it does not do it at 5 meters deep. Actually it takes way more time!!! And there is no way to change it.

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