Detailed review and test of the MT PRO professional dive computer (Safe & Sea). The essential tool for commercial diving under French regulations (MT 2019).
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In the world of diving, the border between technical gear and professional equipment is often blurred. Yet, when shooting underwater professionally or performing submerged tasks, regulations impose an extremely strict safety framework. The MT PRO from French brand Safe & Sea is a true UFO on the market. It is not a classic decompression computer: it has been specifically designed to digitize and apply the French Ministry of Labor tables (MT 2019) to the letter. Carved from a block of aluminum, equipped with a powerful OLED screen and flash/vibe alarms, this casing targets those for whom diving is first and foremost a regulated profession. Compared to our usual tech computers, what is this singular instrument worth?
Global Score: 4.0/5 (Weighted score for specific professional use)
| Criterion | Score | What this means |
|---|---|---|
| Algorithm & stops | 4.5/5 | Strict and digitized application of the MT 2019 Tables (2019 Decree). |
| Air & multi-gas | 3.0/5 | Focused on professional air diving up to 60 meters. |
| Screen & ergonomics | 4.8/5 | Extremely bright 2.5-inch OLED screen, two-button magnetic interface. |
| Battery & power | 4.5/5 | Replaceable 18650 battery (2500mAh) with induction charging (> 20h autonomy). |
| Connectivity & app | 4.5/5 | Built-in Bluetooth with legal profile export to a no-install web viewer. |
| Compass & instruments | 3.5/5 | No 3D compass, but an unbeatable triple alert system (vibration, buzzer, LED flash). |
| Robustness & depth | 4.0/5 | Anodized aluminum housing, 6mm impact-resistant polycarbonate glass. 60m service. |
| Price & service | 3.5/5 | Substantial professional budget (~€1454), but very reliable \"Made in France\" manufacturing and service. |
This computer is suitable for: The professional diver (commercial diver, pro videographer, scientific diver) subject to French regulations and having to legally justify their dive profiles according to MT 2019 tables.
This computer is not ideal for: The recreational diver or tech explorer (Trimix/Sidemount) who needs customizable mathematical models (Bühlmann ZHL-16C).
Here, it is not about configuring Gradient Factors to adjust your conservatism. The software integrates the law, period.
Algorithm: MT 2019 Tables (Ministry of Labor). The computer calculates the profile in real-time according to legal obligations, eliminating the need to manage plastic slate tables on the bottom. (Score: 5/5 for targeted pro use, 0/5 for recreational tech use).
Deco display: Very pragmatic, focused on intervention times, mandatory stops, and compliance with the planned profile. (Score: 4.5/5)
Safety alert: Infallible. If a non-compliance is detected, it is logged in the legal journal. (Score: 5/5)
The MT PRO meets operational specifications.
Number of gases managed: Oriented towards the standards of classic professional intervention (air). (Score: 3/5)
Trimix & CCR: Not supported, this is not the tool intended for that. (Score: 1/5)
In the dark and cold waters of Belgian quarries or during work in very murky waters, the screen must pierce the turbidity.
Screen type: High-brightness OLED (resolution 128x64 px). It is a true beacon. (Score: 5/5)
Useful display size: 2.5 inches, massive numbers impossible to miss. (Score: 5/5)
Navigation: Only two Hall effect magnetic buttons, wear-free and manipulable with the thickest drysuit gloves. (Score: 4.5/5)
The device shines by its repairability index and its industrial approach to energy management.
Battery type: Standard 18650 lithium battery (2500mAh), common and easy to replace in case of weakness after a few years. (Score: 5/5)
Autonomy: Over 20 hours of effective diving. (Score: 4.5/5)
Charging: Induction (wireless). The computer is placed on its dock, eliminating any risk related to wet connectors. (Score: 5/5)
The key word is traceability. The operations manager or employer must be able to verify the dives.
Synchronization: Built-in Bluetooth. (Score: 4.5/5)
Companion app: No heavy application to install. The MT PRO uses a direct web viewer allowing the editing of compliant intervention reports (planning, curves, non-conformities). (Score: 5/5)
Rather than a navigation compass, the MT PRO relies on a total sensory alert system, very precious when the gaze is blocked in the viewfinder of a camera housing for a body like the Sony RX10V.
Alarms: The computer combines a powerful vibration motor, an audible buzzer, and a bright LED flash. This is absolute assurance of being warned of the end of the intervention time, even if all your attention is focused on framing your buddy. (Score: 5/5)
The tool was designed as a high-precision anvil.
Service depth: 60 meters (limit of professional air diving). (Score: 3/5)
Protective glass: 6 mm thick polycarbonate (extremely resistant to blunt impacts). (Score: 4.5/5)
Materials: Anodized aluminum chassis, black polyacetal back. The device weighs 250g and resists temperatures from -15°C to +55°C. (Score: 5/5)
"Made in France" manufacturing and the niche market justify an enterprise-oriented price.
Value for money: Sold around €1454, it is a professional investment that amortizes through the time saved and the legal compliance it brings. (Score: 4/5)
Service availability: Produced in France by Safe & Sea, which guarantees direct access to parts and support. (Score: 4.5/5)
French Regulations: If you work under jurisdictions that do not impose the MT 2019 decree, this computer loses its legal relevance (although it remains ultra-robust). It is vital to check the requirements of your camera or intervention contracts before purchasing.
Attachment system: The device is thought for the work environment: it can be fixed via bungees, a classic strap, or even screwed directly onto a rigid plate.
Unalterable log: Unlike a leisure computer, you cannot discretely erase a fast ascent alert or a duration exceedance. The journal is the black box of the intervention.
The MT PRO strictly applies the tables in force. In diving, whether for recreational exploration or heavy intervention, decompression is a rigorous and framed science. Under no circumstances do we seek to artificially adapt the parameters of an official table. Moreover, although the MT PRO has an arsenal of vibrating and visual alarms to warn you, direct visual observation of parameters remains primary. Always keep your redundant backup equipment and ensure that every evolution in the water is carried out according to the rules of the art and with a reliable analog pneumatic redundancy.
The Safe & Sea MT PRO does not enter into competition with any of the Shearwater, Garmin, or Suunto models on our list, simply because it does not play the same sport. It is a legal, robust, and infallible instrument, designed to simplify the life of professionals subject to MT 2019 tables. With its OLED screen blinding with clarity, its indestructible magnetic buttons, and its triple-action alarms (vibration, sound, flash) ideal when concentration is focused on camera gear, it perfectly fulfills its specifications. A technical equipment assumed, expensive, but redoundably effective for workers in the subaquatic environment.
The computer runs on a standard 18650 Lithium-Ion rechargeable battery (2500mAh). Thanks to this generous capacity and an optimized OLED screen, battery life reaches over 20 hours of active use underwater. Conveniently, charging is done by induction without any mechanical contact.
To learn more about choosing batteries and extending the life of your computer, read our complete guide to dive computer batteries.
Safe & Sea offers this computer as a unique tool in its range. If you are looking for alternative professional models or wish to compare it to other technical exploration computers with interchangeable batteries (like the AA battery of the Petrel 3), you can read our Shearwater Petrel 3 Fisher review.
To compare this computer with other models, check our dive computer comparator.
It is specifically designed for professional divers (commercial divers, scientific divers, pro photographers) subject to French regulations and the Ministry of Labor tables (MT 2019).
No, its calculation engine is entirely based on the strict digitization of the official MT 2019 tables. It does not manage Gradient Factors like a classic technical computer.
Yes, it uses a standard 18650-type battery (2500mAh) giving it over 20 hours of battery life. Recharging is done by induction.
It is designed for air diving according to regulations, with a certified service depth of 60 meters.
