Discover our comprehensive review of the Mares Quad 2. Features a large segmented display, Bühlmann ZH-L16C algorithm, 5 gas Trimix capability, and native Bluetooth. The AquaExposure verdict.
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It's a common sight on dive boats to see a diver struggling to navigate the cramped menus of their dive computer during a safety stop, all while wearing thick gloves. A dive computer is more than just a timer- it's the vital interface that ensures your decompression safety at every moment. With the Mares Quad 2, the Italian manufacturer has decided to modernize its most popular large-screen model from the past decade. The goal? To maintain the massive readability of the original rectangular display, while replacing its old engine with a customizable Bühlmann algorithm that handles Trimix, and finally adding native Bluetooth connectivity. This review assesses whether this hardware overhaul justifies choosing it over more expensive color displays in favor of a classic, high-contrast interface.
| Overall score: 4.0/5 | Criterion | Score | What it means |
|---|---|---|---|
| Algorithm & decompression stops | 4.6/5 | Complete Bühlmann ZH-L16C with user-adjustable Gradient Factors. | |
| Air & multi-gas | 3.7/5 | Supports up to 5 simultaneous gases, including Nitrox and full Trimix. | |
| Screen & ergonomics | 3.5/5 | Large segmented LCD screen ensuring unbeatable contrast and intuitive four-button navigation. | |
| Battery life | 3.5/5 | Replaceable button battery offering up to 100 hours of dive time. | |
| Connectivity & app | 5.0/5 | Native Bluetooth integration for the dive log and wireless updates. | |
| Compass & instruments | 2.5/5 | No integrated compass, but offers an effective depth gauge. | |
| Robustness & depth | 4.1/5 | Reinforced plastics certified for depths up to 150 meters. | |
| Price & customer service | 4.5/5 | Exceptional value for money to get Trimix on such a large screen, backed by Mares' customer support. | ## Detailed Analysis |
The Quad 2 abandons the previous "black box" algorithm of the RGBM model to offer you complete control over your decompression calculations, a major evolution for this product line. The device features the renowned Bühlmann ZH-L16C algorithm with Gradient Factors that are fully adjustable by the user. The dive planner manages the Time To Surface (TTS) to ensure safe approach to decompression stops. The computer triggers visual and audible alarms in case of anomalies or excessively rapid ascents.
It is now capable of tracking divers through advanced technical open-circuit training, making cylinder changes extremely smooth. It manages up to 5 distinct gas mixes, including Nitrox (21% to 99% O2) and Trimix (hypoxic and normoxic). However, it does not have any native modes for rebreathers (CCR) and does not support wireless air integration.
The key advantage of this unit remains its XXL format, which never strains the eyes underwater, even in conditions of very low visibility. The monochrome display uses a segmented "Chip-On-Glass" technology offering very large characters. Operation is easy thanks to four large buttons located at the corners of the housing, perfectly suited for use with dry gloves.
Forget about USB adapters sold separately- this dive computer finally meets modern comfort standards. The Bluetooth module is integrated from the factory, allowing direct synchronization of your dive log with the Mares app on your smartphone. The internal memory stores 100 hours of dive profiles with precise sampling every 5 seconds.
Digital navigation is not included- the budget was allocated to mathematical processing power. The dive computer does not have a compass. However, it includes a standard depth timer function with resettable average depth display and a stopwatch.
This massive rectangular housing is designed to withstand years of rough handling on Zodiac boats and boat decks. It is certified for a maximum display depth of 150 meters (492 feet), and automatically compensates for atmospheric pressure (altitude) every 20 seconds.
This computer is designed for recreational divers or open-circuit technical divers who prioritize maximum readability at an affordable price, with a completely transparent algorithm. Its internal mechanics are actually built to support divers through advanced technical training (Trimix and multi-cylinder configurations), despite its simple appearance. It's not ideal for those seeking a state-of-the-art color screen or who absolutely want to display their tank pressure on their wrist. Users of rebreathers (CCR) should also consider dedicated product lines.
The Mares Quad 2 computer uses a replaceable CR2450 lithium battery. This feature is a significant advantage, especially for liveaboard trips where access to an electrical outlet to recharge a battery may be uncertain. The advertised battery life of 100 hours of dive time allows you to plan a full diving season without worry. However, it's wise to have some spare batteries on hand, especially before a long trip, to avoid any unexpected interruptions to your dives.
To find out which battery to buy for this computer, check out our complete guide to dive computer batteries. To learn how to replace the battery yourself step by step without risking damage, read our complete tutorial on how to change your own battery.## Links to other models from the same brand
If the Mares Quad 2 has appealed to you with its simplicity and technical capabilities, you might be interested in other models from the Mares brand. For example, check out the Mares Smart Test: The dive computer that focuses on essentials for a more compact format, or the Mares Genius Test: A large screen dedicated to Trimix diving if you are looking for a color display and advanced air integration. Each model offers a different approach to diving, but always with Mares reliability.
To compare this computer with other models, visit our dive computer comparison tool.
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The Quad 2 retains the same large screen format but features a completely redesigned internal engine. It transitions from the RGBM algorithm to the Bühlmann ZH-L16C and now includes native Bluetooth connectivity. Furthermore, it can manage up to 5 gases, including Trimix.
No, this specific version of the Quad 2 does not have a receiver for wireless probes. The air pressure is read using a traditional mechanical pressure gauge.
Yes, it allows you to manage up to 5 gas mixtures. It supports Nitrox with oxygen levels up to 99%, as well as both normoxic and hypoxic trimix.
