Professional Diver’s Watches with Light-Powered Eco-Drive*1 Technology and an Analog Depth Meter

(BUSINESS WIRE)–The CITIZEN PROMASTER Collection has always captured the attention of sports professionals from around the world for its incredible functional sports watches. CITIZEN is now releasing three new Aqualand ISO*2 compliant diver’s watch models. While these professional sports watches provide functionality, durability, and safety features, they were also designed to have broad appeal for those out of the water.

Professional sports watches in the PROMASTER collection have proven reliability and functionality, even in the harshest conditions, and feature all of the functions necessary for exploring the sky, land, and sea. The first Aqualand diver’s watch, launched in 1985, was the first watch of its kind to feature a depth gauge with an electronic sensor. The model was renamed the PROMASTER Aqualand in 1989, and for more than 30 years the Aqualand name has been synonymous with professional diver’s watches incorporating the latest sensor technologies. The newest diver’s watches in the PROMASTER collection have ISO-compliant water resistance up to 200 meters and feature a depth meter with a dedicated depth gauge hand capable of measuring up to 50 meters.

The 50.4 mm case has an innovative three-piece construction with a unique profile that gives the watch its rugged look. The matte black of the dial contrasts with the different shapes of the hands to ensure high visibility. The design of the subdial at the six o’clock position was inspired by a submarine sonar screen. These light-powered Eco-Drive models incorporate CITIZEN’s proprietary technologies, allowing the watch hands to display both the time and depth simultaneously. The addition of a chronograph function results in an intricate dial design that also provides the high visibility needed in a diving watch.

These models also include an extender strap that allows them to be worn over a wetsuit. This allows easy adjustment of the watch band length for either diving or regular use – the extender strap can be worn while diving and the regular band can be worn back on land.

The light-powered Eco-Drive movement eliminates the need for regular battery replacement, and the watch will keep running as long as there is a light source available. The watch also has multiple safety features including a power reserve indicator, a water sensor, a screw down crown, a screw down push button, and a one-way rotating bezel. These models provide the ultimate combination of functionality and stylish design, incorporating all of the functions needed in a professional diver’s watch.


The watch simultaneously displays the current time as well as the current dive depth. It can also display the maximum dive depth after the dive has finished (the depth gauge can measure up to 50 meters). The water sensor detects when the watch enters the water, automatically switching to dive mode, indicated by the water depth hand pointing to DV. The depth meter automatically engages when the watch is underwater, and the water depth hand automatically shows the current depth. The dial ring indicates depths commonly used by divers (3, 6, 9, 12, and 15 meters) in 3 meter increments down to 15 meters. The water depth hand gradually returns to its original position as the diver resurfaces. When the watch is taken out of the water, it automatically switches from dive mode to regular mode.

To commemorate the release of the new Aqualand and their dive heritage, Citizen partnered with the tactical tool company Lifeline. Lifeline provides rescue tools to the military, police and fire rescue teams worldwide. With the purchase of the Aqualand Special Edition blue dial model, every watch will be accompanied with their signature JAWZ dive rescue tool. Crafted from lightweight titanium, JAWZ cuts through netting, seaweed and even laminated glass in case of an emergency. JAWZ tools and the Special Edition Aqualand timepiece will be packaged in a collectible tackle box. They are limited to 1,000 pieces.

The collaboration with Citizen and Lifeline goes further to a creation of a docu-series that captured the challenges of rescue dives, proper training and the importance of the right tools and equipment. Lifeline assembled an elite team of dive instructors, paramedics and fire lieutenants to demonstrate their skills in some of the world’s most difficult diving locations and scenarios. Lifeline followed and filmed the team around the globe to capture the challenges of these dives, the critical importance of proper training and impact of choosing the right tools and equipment for their missions. The docu-series will be released in April.

*1 Eco-Drive is CITIZEN’s proprietary technology that powers watches using any natural or artificial light source, eliminating the need to replace batteries. Certified as an Eco Mark product for the first time in the watch industry.
*2 ISO: International Organization for Standardization. “ISO 6425 diver’s watch” for all diver’s watches to ensure diver safety.
*3 Duratect is CITIZEN’s proprietary surface hardening technology that enhances the surface hardness of metals such as stainless steel and titanium, protecting watch bodies from scratches and damage. This technology offers excellent abrasion quality and maintains the luster of metals for long periods of time. Duratect DLC achieves Vickers hardness of 1,000-1,400 by creating an amorphous carbon hard film—mainly composed of carbon and hydrogen—on the surface of the material.

For more information on Promaster Aqualand, please visit:


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, a pioneer in watchmaking and innovation since 1918, promotes excellence and creativity with a deep-rooted respect for craftsmanship. Citizen advocates “Better Starts Now,” searching for and accomplishing goals that cultivate positive change. Driven to create timepieces enjoyed by citizens all over the world, Citizen formed an alliance partnership with Disney in 2018, another powerhouse brand with similar values. With a long-term partnership in place, Citizen participates in activations surrounding the Disney Parks, Marvel, Star Wars and more. Citizen is the Official Timepiece of both Walt Disney World and Disneyland with branded clocks in both theme parks. In addition, in 2020 Citizen joined 1% for the Planet, pledging to donate 1% of its website sales in the U.S. to support global nonprofit organizations focused on the environment.