Male watches Citizen Promaster Marine Automatic Diver's Super Titanium NB6021-17E

Movement
Automatic
Case material
Titanium
Crystal material
Sapphire
Weight
72 g
Waterproof
200 m

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The Citizen Promaster Marine Super Titanium Automatic NB6021-17E is the ideal choice for both active athletes and everyday wear. The watch impresses not only with its pure "diver" look, but also with features such as the mechanical movement with automatic winding. Excellent properties are also provided by the case and tension material Super Titanium™, a special titanium developed by Citizen. It serves excellently not only during dives but also during everyday wear.

The Citizen NB6021-17E watch has a case made of Super Titanium™, which guarantees low weight, high strength and complete anti-allergy. Thanks to a special hardening method (in this case Duratect MRK), the surface of this titanium is more scratch-resistant than stainless steel. On the hand it holds thanks to the rubber strap. Inside the case is the Citizen 9051 mechanical in-housemovement with automatic winding, first used by Citizen in 2021. This movement operates at a modern frequency of 28,800 semi-frequencies per hour (4Hz) and has 24 stone fits. It also features a "Hacking" function, which is the stopping of the second hand when the watch is regulated, and the option of manual winding by the crown. Thanks to the increased resistance of the movement to magnetic fields, this model has a resistance to magnetic fields of a very respectable 16000 A/m ( the resistance of a normal watch is around 4800 A/m) The movement also has a Parashock system (an invention of Citizen), which increases the resistance of the movement to shocks and shocks. A practical feature is the date display, which is located at the traditional 3 o'clock position. The clear dial of this model is protected by a sapphire crystal that is maximally scratch-resistant.

The water resistance of the watch is 200 m, making it suitable for use in water, including swimming or diving. Water resistance is supported by a screw-down crown and compliance with the ISO 6425 diving standard. Improved legibility in low-light conditions is ensured by luminescence applied to the indices and hands.

The watch meets the ISO 6425 diving standard, allowing it to wear the Diver's designation on the dial. Such watches must have a water resistance of at least 100 metres, and the watch must be pressure tested to 125% of the declared water resistance value (i.e. a watch tight to 200 m according to ISO 2281 is only tested to 200 m, a diver's watch according to ISO 6425 must be pressure tested to 250 m) and must meet other conditions. For example, they are tested for decompression, corrosion resistance, resistance to magnetic fields (in this case, the mandatory value of 4800 A/m is exceeded to 16000 A/m) or impact. It must also have a unidirectional rotating lunette, luminescence, etc.

About Super Titania: http://www.nosime-hodinky.cz/super-titanium-supermaterial-od-citizenu/

Citizen watches are guaranteed for 5 years.

Reviews and testing:

• A watch for everyone? Citizen.