Mares Nemo Wide 2 Test: An evolution with continuity.

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Diving equipment often evolves in small increments, seeking a delicate balance between proven reliability and necessary technological advancements. Following the resounding success of the first Nemo Wide, Mares chose the path of evolution rather than revolution. The Nemo Wide 2 retains the massive rectangular casing and the four iconic buttons of its predecessor.

The new features are hidden under the hood. A faster microprocessor, a redesigned screen for even greater clarity, and a timer function requested by technical divers. This test verifies whether these adjustments are sufficient to keep this benchmark of readability competitive against newer models. Dedication, repetition, and self-improvement are at the heart of our practice, and our equipment must adhere to the same standards.

Overall score: 3.4/5 (Slightly higher than V1, thanks to the improved interface).

Algorithm & Milestones

True to its philosophy, Mares integrates its RGBM (Reduced Gradient Bubble Model) algorithm, developed with Dr. Bruce Wienke. This predictive model manages the formation of micro-bubbles and proposes deep stops to smooth out the ascent profile. It's a reliable solution for limiting post-dive fatigue, with several adjustable levels of conservatism. The ascent rate alarm, both visual and audible, adds an appreciable layer of safety. (Score O1: 3.8/5)

Air & Multi-Gas

The Nemo Wide 2 is a very capable multi-gas computer. It handles air and Nitrox, allowing you to set up to three different mixes with an oxygen percentage of up to 99%. It will predictively calculate the benefit of a gas switch during ascent. It's an excellent companion for technical diving, although it doesn't support Trimix, CCR, or air management. (O2 Score: 2.3/5)

Screen & Ergonomics

This is the main improvement in this second version. Mares has retained the 170-degree field of view but redesigned the matrix of the panoramic mineral LCD screen (2.5 inches). The lower information bar is now much clearer, and the characters have been enlarged. The philosophy of the four buttons remains the same: one to go up, one to go down, one to confirm, and one to cancel. The readability is so direct that even with thick gloves, navigation remains very, very precise. (Score O3: 3.6/5)

Battery Life & Power Source

No changes on this side, and that's a good thing. It uses a CR2450 battery, which you can find everywhere in the world. The battery compartment is separated from the main electronics by a high-quality o-ring. This minimizes the risk of complete flooding in case of improper assembly. The charge indicator on the screen allows you to anticipate replacements. (Score O4: 3.8/5)

Connectivity & App

Although the processor has been improved to allow users to update the firmware, the Nemo Wide 2 still omits Bluetooth connectivity. You will need to purchase the Mares Drak USB adapter to communicate with your PC or Mac. The official software, Dive Organizer for PC and Divers Diary for Mac, does the job, but the lack of wireless connectivity is noticeable in this day and age. (Score: 2.6/5)

Compass & Instruments

Still no electronic compass in the features. However, the "Depth Timer" mode has been significantly improved. It now includes a timer function with split times and a resettable average depth display. These are highly valued functions in technical diving. (Score O6: 2.8/5)

Robustness & Depth

With its angular design protected by an elastomer insert, it perfectly resists the abuse of zodiac boats. Its case and flat mineral glass ensure use up to a depth of 150 meters. It is a tool designed to last and withstand the shocks inherent in our activity. (Score O7: 3.6/5)

Prices & Customer Support

The Nemo Wide 2 offers very solid specifications for its estimated price of around €250. Whether you find it new at a discounted price or on the used market, it's one of the most affordable multi-gas solutions guaranteeing such visual comfort. (Score O8: 3.9/5)

This computer is designed for a very wide range of users, from those doing Open Water dives to advanced divers performing Nitrox decompression dives. It's ideal for divers who want the most readable display possible without opting for OLED technology, and who appreciate logical navigation and buttons that can be easily operated even with thick gloves.

It's not ideal for those who prefer miniaturized watch formats or those who require direct wireless connectivity to their smartphone. If you're looking for a similar product but with Bluetooth, consider the Mares Quad, which adopts the same philosophy as the Nemo Wide but with modern wireless technology.

The after-sales service of Mares receives mixed reviews. Some divers report exchanges within eight days, while others mention delays or inflexibility regarding shipping costs. The reseller plays a significant role in this process. It is crucial to go through a trusted professional to ensure optimal support in case of any issues.

The CR2450 battery, which can be replaced by the user, is a major advantage for long trips and cruises. You are not dependent on a specific charger or an available power outlet. Having a spare battery in your waterproof bag ensures that you will never miss a dive due to low battery.

If you appreciate the Mares ergonomics but are looking for different features, the range is extensive. For a more modern approach with Bluetooth connectivity, the Mares Quad is the spiritual successor to the Nemo Wide. If you prefer the watch format for everyday use, the Mares Sirius offers a compact and high-performance alternative.

To compare this computer with other models, see our diving computer comparison tool.

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