CITIZEN PROMASTER Eco-Drive AQUALAND

Introducing the Citizen Promaster Eco-Drive Aqualand

CITIZEN proudly announces the launch of the new Eco-Drive™ AQUALAND models in the PROMASTER MARINE line. CITIZEN's world-renowned PROMASTER brand has long enjoyed the highest regard among professionals for supreme durability, superior functionality, and a capacity to capture the imagination of divers around the globe. These new PROMASETER diver's watches offer unmatched toughness and visibility as well as an electronic depth metre that can gauge water depths up to 70 metres.

In 1985, CITIZEN launched AQUALAND (renamed “PROMASTER AQUALAND” in 1989), the world's first dive watch to incorporate an electronic depth metre. For more than 30 years, CITIZEN has continued to build on this achievement, developing various dive watches that incorporate sensor technologies for professional use. The PROMASTER MARINE category, which epitomises this proud history, has achieved renown and prominence around the world. The new Eco-Drive PROMASTER AQUALAND models deliver enhancements designed for all types of divers – from recreational to professional. From their cutting-edge specifications to the all-new designs, these diver's watches have been upgraded for maximum toughness and visibility. All of this makes these new ISO compliant watches perfectly suited for the Expert range of the PROMASTER MARINE line.

Large hands and indicators use a glow-in-the-dark material to ensure superior visibility. The unique shape of the hands also makes it easier to recognise time and depth, even when all the hands converge at the same position. Different colours of luminous paints employed on the time display and depth metres, respectively, make it easier to read the information even under water. Wide distance indexes – ranging from 0 to 40 metres – enable wearers to easily read the indexes while enjoying the dynamic movement of the hands. The shape of the case, which is inspired by a clamshell, enhances the sense of protection. It packs robust functionality in a stylish design, thoroughly safeguarding the watch's internal mechanisms from accidental damage.

Note on Eco-Drive: *1: Eco-Drive is CITIZEN's proprietary technology that powers watches using any natural or artificial light source, eliminating the need for batteries.

Visual Description: A photograph showcases the CITIZEN PROMASTER Eco-Drive AQUALAND BN2024-05E, an authentic diver's watch, emphasizing its robust design and professional capabilities.

Key Product Features

Watch Dial and Components

Visual Description: A detailed illustration of the watch dial highlights key components: Screwdown Push Button (for reference position and depth call), Power Reserve Indicator, Water Pressure Sensor, Water Sensor, and the Water Depth Hand and Maximum Water Depth Hand. The dial layout is designed for optimal visibility, even under water.

Depth Metre (Measurement to 70m)

A new depth metre can show the current depth and maximum depth during each dive simultaneously. The operational range is up to 70 metres below sea level. The starting point for the depth indicator is positioned at 3 o'clock (horizontal level) to simulate diving from the surface to the deep sea. Since 40-metre coverage is standard for most recreational divers, the watch displays distances at wide indexes ranging from 0 to 40 metres. Distances between indexes from 50 to 70 metres are set more narrowly. Users can easily read indexes while viewing the dynamic movements of the hands.

Large Hands for Excellent Visibility

Large hands enable users to read time and depth at a glance. CITIZEN's intuitive layout design ensures recognition even when all hands converge at the same position.

Visual Description: Three close-up images demonstrate the watch's excellent visibility under various conditions. The first shows the hands clearly even when overlapping. The second illustrates how hand lengths are designed not to obscure the power reserve indicator. The third highlights the hallowed-out minute hand design for better recognition of other indicators. A fourth image shows the distinct blue water depth hand and gray maximum water depth hand. Another visual presents an exploded view of the watch's robust, dual-structure case, emphasizing its protective clamshell design and reinforced components.

Colour Coding Enhances Recognition Under Water

Luminous paint on the hands and indexes is coded green for time display and blue for depth metre, providing easier recognition under water. The depth metre specifically uses blue paint for better readability. All luminous paints are made from completely non-radioactive materials.

Easy-to-Operate Bezel

A newly developed corrugated bezel ensures ease of operation, even when wearing gloves. A unified bezel and case design prevents operational error, even in the event of impact shock. Positioning the crown at 4 o'clock provides unobstructed access. The gold ring positioned at 3 o'clock serves as the water sensor.

Robust Dual-Structure Case

The exterior casing features a clamshell design that protects the inside of the watch. A robust, high-impact case and other reinforced parts further shield the movement. This reinforced design ensures depth protection and minimizes disruption of the movement, even if the watch impacts a hard surface like rock underwater.

Technical Capabilities

• Thirty years of accumulated experience in sensor technologies enable CITIZEN to achieve an operational range of between 0 and 70 metres. This includes accuracy of ± 1 metre for depth between 0 to 20 metres and ± 2 metres for depth between 20 to 70 metres.
• Features a rapid ascent warning alarm.
• Features Eco-Drive, CITIZEN's original light-driven technology. To assure greater safety, a power reserve indicator positioned at 9 o'clock makes it possible to confirm power reserves in four levels before diving.
• CITIZEN's Eco-Drive technology eliminates the need to replace batteries, removing the requirement to open the case back, thereby enabling superior waterproof properties for a longer period.

Model Specifications

Visual Description: Three distinct models of the CITIZEN PROMASTER Eco-Drive AQUALAND watches are displayed: BN-2024-05E, BN-2021-03E, and BN-2025-02E. A table provides a side-by-side comparison of their specifications, including Calibre, Case material and size, Crystal type, Water Resistance (ISO Compliant Diver 200m), Band material, and Principal Functions (Depth Meter 0-70m, Power Reserve Indicator).