Product Overview
The Citizen Men’s Eco-Drive Promaster Sea Eco Dive watch is a bold fusion of adventure-ready functionality and sustainable innovation. Designed for the modern explorer, this ISO-compliant dive watch combines rugged durability with sleek aesthetics, featuring a striking black polyurethane strap and a robust stainless steel case. Powered by Citizen’s revolutionary Eco-Drive technology, it harnesses light—any light—to keep running indefinitely, eliminating the need for battery replacements. Whether you’re diving into ocean depths or navigating urban landscapes, this timepiece delivers precision, reliability, and environmental responsibility in one compelling package.
Key Features
- Eco-Drive Technology: This watch is powered by Citizen’s proprietary Eco-Drive system, which converts any light source—natural or artificial—into energy to power the watch. This means you’ll never need a battery change, making it both eco-friendly and incredibly convenient. The energy is stored in a rechargeable cell, ensuring consistent performance even in low-light conditions.
- ISO-Compliant Dive Watch: Built to meet rigorous international standards for diving watches, this model is water-resistant up to 200 meters (200M WR), making it suitable for recreational scuba diving and water sports. Its one-way rotating elapsed-time bezel allows divers to safely track immersion time, while anti-magnetic and anti-shock resistance ensures accuracy and durability under extreme conditions.
- Luminous Hands and Markers: For enhanced visibility in dark or underwater environments, the watch features luminous hands and hour markers filled with superior luminescent material. This ensures clear legibility at all times, whether you’re exploring a cave, diving at night, or simply checking the time in low light.
- Dual Time Functionality: Ideal for travelers and professionals, the dual time feature allows you to track a second time zone simultaneously. This practical function makes it easy to stay coordinated across different regions without needing a second watch.
Technical Specifications
- Model Number: BJ7128-08E
- Collection: Promaster Dive
- Clasp Type: Buckle
- Dial Color: Black
- Technology: Eco-Drive
- Water Resistance: 200M WR (suitable for diving)
- Band Material: Polyurethane
- Band Color: Black
- Case Diameter: 43.5 millimeters
- Case Material: Stainless Steel
- Dial Window Type: Mineral Crystal
- Display Type: Analog
- Batteries: 1 Lithium Ion battery (included, rechargeable via light)
- Package Dimensions: 8.15 x 5.24 x 4.84 inches; 1.52 pounds
- Department: Men’s
- Date First Available: December 2, 2024
- Manufacturer: Citizen
- ASIN: B0DDMCR1PQ
Benefits & Uses
The Citizen Eco-Drive Promaster Sea Eco Dive watch is engineered for adventurers, divers, and environmentally conscious individuals alike. Its 200-meter water resistance and ISO compliance make it a trustworthy companion for underwater exploration, while the durable stainless steel case and mineral crystal protect against daily wear and tear. The Eco-Drive technology ensures uninterrupted operation without environmental waste from disposable batteries. The dual time function adds practical value for frequent travelers or professionals managing global schedules. Additionally, the sleek black design with polyurethane strap offers comfort and style for both active and casual settings.
Why Choose This Product
This watch stands out with its perfect balance of performance, sustainability, and design. As part of Citizen’s Promaster Dive collection, it embodies a legacy of rugged reliability and innovation. The inclusion of Eco-Drive technology reflects a commitment to environmental stewardship, aligning with Citizen’s partnerships with organizations like 1% For The Planet, American Forests, and Everybody Solar. Backed by a five-year limited warranty—extendable to six years with registration—this timepiece offers long-term value and peace of mind. Whether you’re diving into the deep or navigating daily life, this watch is built to keep up.






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CITIZEN PARTNERSHIPS


Disney Alliance: The official timepiece partner of Disney parks, run Disney sponsorship, events and more.


Everybody Solar: Works to protect the environment and strengthen U.S. communities through solar-energy projects.


American Forests: A pathfinder for creating healthy forests from coast to coast, leading the way for creating healthy and resilient forests.


1% For The Planet: Represents an alliance of businesses and individuals who are committed to enacting change to protect and restore the earth.
How long is the coverage on my Citizen Watch?
The Citizen Watch comes with a five-year, limited coverage. When registering the watch online or through the Citizen App, the customer will receive an additional coverage year free, for a total of six years coverage.
How do I set my watch?
If the model number is known, go to the brand website and search or browse for the model. When on the product page, the setting instructions are listed at the bottom of the “features” section.
How do I get a manual for my watch?
Setting instructions can be accessed through the website and the My Citizen App (available for iOS and Android). To obtain the instructions specific to the purchased watch, provide the Movement Caliber Number on the watch’s caseback.
Can a replacement strap be purchased or links for this watch?
Straps, bracelets and links may be available for certain Citizen watch models. To find out if a replacement strap or part is available for the Citizen Watch, please visit the new self-service portal.
