The Citizen Promaster Marine series has captured the hearts of diving enthusiasts. Known for its high reliability and functionality, the series offers a variety of models perfect for any underwater exploration. In this article, we will introduce the features of the Citizen Promaster Marine and the models that are highly rated by divers.

The appeal of Citizen's diver's watch, the Promaster Marine
Citizen's Promaster is a professional watch that delivers high performance even under harsh conditions. It is divided into three types for land, sea, and air, and the marine series is the "MARINE" series.
Let's first take a look at the features and appeal of MARINE, which has been equipped with features to aim for deeper waters.
Specifications beyond the practical range
One of the great attractions of the MARINE is its specifications that go beyond practical use. The standard MARINE is waterproof to 200m, but there are also models that can withstand depths of 1000m.
For most people, 1000m water resistance is a useless feature, but the joy of owning an over-specced watch is irreplaceable.
In addition to excellent water resistance, some watches in the MARINE series are equipped with essential features for a diver's watch, such as a depth gauge. Models that display depth in timekeeping mode allow you to enjoy watching the depth hand move dynamically while diving.
Proprietary developed materials
Some MARINE models use "Super Titanium" for the case, etc. Super Titanium is a material developed specifically for wristwatches and processed by Citizen.
Titanium is a material that is lightweight and rust-resistant, and Citizen's proprietary technology has made Super Titanium even more scratch-resistant and beautiful.
It has high corrosion resistance against seawater, making it suitable for wearing in the sea. Of course, it is also recommended for those who want to wear it in situations where scratches are likely to occur.
Photovoltaic Eco-Drive
Eco-Drive is a proprietary Citizen technology that converts even the slightest amount of light into electricity to power a watch. Because it can be charged even with fluorescent light, there is virtually no risk of the watch stopping during everyday use.
There is also no need for regular battery replacement. While a typical quartz watch needs to have its battery replaced every few years, Eco-Drive models will continue to function until the secondary battery or other components break.
Any excess electricity generated is stored in a secondary battery, so once fully charged, it can operate for more than six months even in the dark.
Recommended models of Citizen's diver's watch "Promaster MARINE"
The MARINE series offers many distinctive models. Check out the features and appeal of the recommended models and use them as a reference when choosing a diver's watch.
1000m saturation diving water resistance! "Promaster Eco-Drive Professional Diver 1000m"

Light-powered Eco-Drive (Cal. J210). Super Titanium™ case (diameter 52.5mm, thickness 22.2mm). 1000m saturation diving water resistance. 308,000 yen (tax included).
The Promaster Eco-Drive Professional Diver 1000m, Ref. BN7020-09E, is a model that can withstand the harsh environment of a depth of 1000m. To achieve a durable exterior, Citizen's unique surface hardening technology is used on each part.
Another attractive feature is the shock detection function, which prevents the hands from shifting due to impact. Even if the watch receives an impact and the hands and scale are about to shift, the function temporarily fixes the hands. Even if the person notices the impact, the watch continues to keep accurate time.
The hands and dial are coated with two-tone luminous paint that maintains brightness for a long time, and have been tested in the deep sea to ensure the best underwater visibility.
Promaster Mechanical Diver 200m inherits the design of the Fujitsubo Diver

Automatic winding (Cal. 9051). 24 jewels. 28,800 vph. Power reserve approximately 42 hours. Super Titanium™ case (diameter 41mm, thickness 12.3mm). 200m diving water resistance. Price: 170,500 yen (tax included).
The Barnacle Diver is a watch model called the "Challenge Diver" that was discovered on an Australian beach and was still functioning despite being covered in barnacles. It is still on display at the Citizen Museum and is talked about as a legendary diver's watch among watch enthusiasts.
The Marine series' Promaster Mechanical Diver 200m, Ref. NB6025-59H, inherits the design of the Fujitsubo Diver. It brings a modern update to the legacy model, improving magnetic resistance and comfort.
The gradation dial represents the image of a faint ray of sunlight shining through the dark ocean. The case is made of Duratect DLC, which makes it resistant to small scratches.
Promaster Eco-Drive GPS Satellite Wave Diver 200m Watch automatically adjusts the time wherever you are
Light-powered Eco-Drive (Cal. F158). Super Titanium™ case (47mm diameter, 15.6mm thick). 200m diving water resistant. Price: 181,500 yen (tax included).
The Promaster Eco-Drive GPS Satellite Wave Diver 200m watch, Ref. CC5006-06L, is a diver's watch equipped with Eco-Drive technology. Once fully charged, it can run for approximately seven years with the power save function activated.
Features like Satellite Wave GPS, which automatically corrects the time no matter where you are, and Direct Flight, which displays the time around the world with simple operations, will be useful for people who travel abroad for work or pleasure.
The case diameter is approximately 47mm, which is quite large. Recommended for those who want to accentuate their strength and masculinity.
Promaster Eco-Drive Aqualand 200m: Measures current and maximum water depth

Solar-powered Eco-Drive (Cal. J250). Stainless steel case (diameter 46.1 mm, thickness 16.4 mm). 200m diving water resistant. 82,500 yen (tax included).
If you're looking for a multi-functional diver's watch, check out the Marine series' Promaster Eco-Drive Aqualand 200m (Ref. BN2036-14E), which features a function that simultaneously displays the current and maximum depth.
It can measure depths up to 70m, with an error of approximately ±1-2m, allowing for highly accurate measurements. You can also enjoy the dynamic movement of the hands while diving.
The watch features a screw-lock crown and buttons, which can be locked to prevent accidental operation. There is also no gap between the buttons and the case, making it highly waterproof.
Enjoy an active daily life with Citizen's diver's watch
Citizen's Promaster Marine is a professional diver's watch with high specifications, including Super Titanium and Eco-Drive technology.
There are many models available in easy-to-use sizes and colors, and they are not only practical as diver's watches but also have excellent designs. Therefore, they are also suitable for everyday use. Wear a professional-grade diver's watch and enjoy an active daily life.
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