Product Overview
The Citizen Men’s Eco-Drive Promaster Sea Eco Dive is a high-performance dive watch built for underwater exploration and everyday durability. Designed for divers and outdoor enthusiasts, this timepiece combines advanced functionality with rugged reliability. Powered by Citizen’s Eco-Drive technology, it charges using any light source—natural or artificial—eliminating the need for battery replacements and supporting sustainable timekeeping. With its ISO-compliant dive certification and 200-meter water resistance, it’s engineered to perform in demanding environments while maintaining precision, legibility, and style both beneath the waves and above.
Key Features
- Eco-Drive Technology: Runs on light—sunlight, indoor lighting, even dim sources—ensuring continuous operation without battery changes. This innovative system stores energy efficiently, making it ideal for frequent travelers, active users, and those who value low-maintenance, eco-conscious design.
- ISO-Certified Dive Watch: Meets international standards for diving watches, ensuring accuracy, reliability, and safety during underwater use. Trusted by recreational and professional divers, this certification confirms the watch’s ability to withstand real-world diving conditions.
- One-Way Rotating Bezel: Features elapsed-time tracking with anti-reverse rotation, a critical safety feature that prevents accidental movement and ensures accurate dive time monitoring. This helps divers avoid overestimating their air supply and enhances underwater safety.
- Luminous Hands and Markers: Filled with high-luminosity material for exceptional visibility in low-light and underwater conditions. Whether during night dives or deep-sea exploration, the dial remains clearly readable, supporting safe and confident navigation.
- Anti-Magnetic and Anti-Shock Resistance: Protects internal components from magnetic interference and physical impacts. This ensures consistent timekeeping performance in harsh environments, from boat decks to rugged terrain.
- Dual Time Functionality: Allows tracking of a second time zone, making it practical for travelers, pilots, remote workers, or anyone managing schedules across regions. Easily monitor home and destination time without switching watches.
- Black Polyurethane Strap: Lightweight, flexible, and resistant to wear, saltwater, and UV exposure. Designed for extended comfort during water activities, diving, or daily wear, it maintains its shape and integrity in wet and humid conditions.
- Date Display: Convenient date window at the 3 o’clock position provides quick reference without disrupting the dial’s clean, functional layout. A subtle yet useful feature for daily planning and organization.
Technical Specifications
- Model Number: BJ7129-05E
- Collection: Promaster Dive
- Clasp Type: Buckle
- Dial Color: Black
- Technology: Eco-Drive
- Water Resistance: 200M WR
- 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 (included)
- Package Dimensions: 8.19 x 5.24 x 4.92 inches; 1.52 pounds
Benefits & Use Cases
This watch excels in both aquatic and urban environments. Its 200-meter water resistance and ISO dive certification make it suitable for snorkeling, scuba diving, and surface water sports. The durable stainless steel case resists corrosion and daily wear, while the mineral crystal protects the dial from scratches. The polyurethane strap offers long-term comfort and resilience, even in saltwater and direct sunlight. The dual time feature adds practical value for international travelers or professionals coordinating across time zones. Whether worn on a dive boat, in the office, or during outdoor adventures, the Promaster Sea Eco Dive delivers reliable performance, rugged elegance, and the confidence of a trusted tool watch.
Important Notes
The Citizen Men’s Eco-Drive Promaster Sea Eco Dive comes with a five-year limited warranty. Registering the watch online or through the Citizen App grants an additional year of coverage, extending protection to six years total. Setting instructions and user manuals are available on the Citizen website or via the My Citizen App (iOS and Android)—users must reference the Movement Caliber Number on the caseback for model-specific guidance. Replacement straps and links may be available through Citizen’s self-service portal. This product ships in original packaging and includes one lithium ion battery. Manufacturer support and warranty requests can be submitted through Citizen’s customer service.
















