CITIZEN PROMASTER Watch nicknamed “Ecozilla” by fans now available as a special Godzilla collaboration mode

The CITIZEN PROMASTER line of professional sports watches offers superior functionality to ignite the imagination. To celebrate Godzilla’s 70th anniversary in 2024, CITIZEN PROMASTER is releasing a limited-edition Professional Diver 300 m Godzilla collaboration model equipped with light-powered Eco-Drive*1.
* Price and launch date may be subject to change.

Eco-Drive Professional Diver 300 m Godzilla Collaboration Model
Left: BJ8056-01E Right: BJ8059-03Z

World-famous Japanese monster Godzilla turns 70 in 2024 and to celebrate, CITIZEN is releasing a new limited-edition Godzilla collaboration model on 25th Jan 2024. This new watch is based on the Professional Diver 300m, a popular long-selling diver’s watch from the PROMASTER line. This saturation diver’s watch has water resistance up to 300 meters and an iconic, rugged design. This tough exterior has earned the watch the nickname “Ecozilla” from fans, a combination of Eco-Drive and Godzilla.
The dial, case, and bezel have a camouflage pattern inspired by Godzilla’s scaly skin, and tiny Godzillas are hidden within the pattern. The band uses environmentally-friendly Polyurethane containing biomass-derived materials. There are two dial variations - a black dial with the classic black and white image of Godzilla, and a dark red dial with Godzilla roaring in rage. The case back design has Godzilla’s footprint, a feature unique to this limited-edition model.

Product Features

- Camouflage pattern inspired by Godzilla’s scaly skin on the dial, case, and bezel. Tiny Godzillas are hidden within the pattern.
- Two dial variations - a black dial with the classic black and white image of Godzilla, and a dark red dial with Godzilla roaring in rage.
- Environmentally-friendly Polyurethane band containing biomass-derived materials.
- Godzilla footprint design on the case back.
- Equipped with light-powered Eco-Drive, eliminating the need for regular battery changes.

Product Specifications

BrandCITIZEN PROMASTER / Eco-Drive Professional Diver 300m (Saturation Diving) Godzilla Collaboration Model
LaunchJan 2024
Price (projected)HK$4,980
Limited quantity2,500(Worldwide)3,000(Worldwide)
Case / BandStainless steel (Grey-colored plating)/ Polyurethane (including biomass-based materials)
GlassSpherical crystal glass
Case diameter / thickness48.2mm /18.5mm( design specification only )
Specifications■ Cal.B873/ Accuracy of ±15 seconds per month / Eco-Drive running for 6 months on full charge (in power save mode) / ■ Luminous (Hands+Index) ■ ISO-standard diving water resistance to 300 m (Saturation Diving) ■ Unidirectional bezel ■ Screw lock crown ■ Limited Edition box

※1 Eco-Drive is CITIZEN’s proprietary technology that powers watches using any natural or artificial light source, eliminating the need to replace batteries. A first within the watch industry, Eco-Drive was certified as an Eco Mark product by the Japan Environment Association (JEA) and recognized for its contribution to environmental sustainability.


Since its debut in 1989, PROMASTER has become an icon among professional sports watches, known for superior durability and reliability in extreme outdoor environments on land, at sea, and in the air. The three classifications in the series are designed with high-performance specifications and durability: MARINE - for divers, LAND - for climbers, and SKY - for aviation. PROMASTER is exclusively designed for optimum functionality, durability, and safety, inspiring the imagination of generations of active sports aficionados who push beyond physical and mental boundaries.

CITIZEN WATCH is a true manufacture d'horlogerie with the capabilities to carry out the entire watch manufacturing process in-house, from creating a watch’s individual components to its final assembly and adjustment. The company operates in more than 140 countries and regions around the world. Since its founding in 1918, CITIZEN has held the belief of “Better Starts Now” — that is, no matter who you are and what you do, it is always possible to make something better, and now is the time to start doing it. Sharing this belief, we began making mechanical watches, invented and improved technologies and explored the future of watches such as our proprietary light-powered Eco-Drive technology.

*Eco-Drive is registered trademarks or trademark of Citizen Watch Co., Ltd.
*The final design and specifications are subject to change without notice.
*The availability, specifications, and related information, such as the product code for the models featured in this site, may vary by markets. If you would like to know more details, including the availability of these products in your area, please select your local website from our global site.