Citizen Men's Promaster Dive Eco-Drive Watch, 3-Hand Date, Polyurethane Strap, ISO Certified, Anti-Reflective Curved Crystal, Screw-Back Case and Crown

Items Description

The Citizen Men's Promaster Dive Eco-Drive Watch, 3-Hand Date, Polyurethane Strap, ISO Certified, Anti-Reflective Curved Crystal, Screw-Back Case and Crown is a professional-grade dive watch engineered for underwater performance and daily durability. Powered by Citizen's Eco-Drive technology, this timepiece converts light into energy, eliminating the need for battery replacements while maintaining reliable quartz accuracy. The 48mm silver-tone stainless steel case houses a dark blue 3-hand dial with luminous hands and markers, providing exceptional readability in low-light conditions.

 

The Promaster Dive series represents Citizen's commitment to functional tool watches, with each model rigorously tested to meet ISO 6425 standards for scuba diving. The polyurethane strap offers flexibility and resistance to saltwater, while the screw-back case and screw-down crown ensure a water resistance rating of 300 meters, suitable for professional scuba diving. This particular variant combines a bold 48mm case profile with a comfortable strap design, making it a substantial presence on the wrist that balances rugged capability with everyday wearability.

 

Key Advantages of the Citizen Men's Promaster Dive Eco-Drive Watch, 3-Hand Date, Polyurethane Strap, ISO Certified, Anti-Reflective Curved Crystal, Screw-Back Case and Crown

 

1. ISO 6425 Certified Dive Performance

The Promaster Dive is certified as a genuine dive instrument, not merely a water-resistant watch. This ISO 6425 certification verifies that the timepiece meets strict international standards for diver safety, including legibility in darkness, resistance to magnetic fields, and durability against thermal shock. The screw-back case and screw-down crown work together to seal the movement from water ingress, while the unidirectional bezel allows divers to track elapsed bottom time accurately.

 

• Water Resistance Rating: 300 meters (30 bar), suitable for professional scuba diving activities.
• ISO Certification: Each unit meets ISO 6425 requirements for dive watch performance and safety.
• Screw-Down Crown: Provides a secure seal against water entry during underwater use.
• Screw-Back Case: Enhances structural integrity and water resistance at depth.

 

2. Eco-Drive Light-Powered Movement

At the heart of this watch lies Citizen's Eco-Drive calibre, a quartz movement that harvests energy from any light source, whether natural sunlight or indoor ambient lighting. The stored power keeps the watch running continuously for months on a full charge, removing the inconvenience of periodic battery changes. For divers who travel or spend extended periods away from conventional charging methods, this self-sustaining system offers a significant practical advantage.

 

• Battery-Free Operation: Light energy powers the movement indefinitely under normal use.
• Power Reserve: A full charge provides months of continuous operation in darkness.
• Low-Energy Indicator: Visual alert signals when stored power is running low.
• Charging Versatility: Works with sunlight, desk lamps, or any artificial light source.

 

3. High-Visibility Dial with Anti-Reflective Crystal

The dark blue dial is paired with luminous hands and hour markers that absorb light and emit a bright glow in dark underwater environments, supporting the ISO requirement for legibility at 25 centimeters in total darkness. The curved crystal features an anti-reflective coating that reduces glare, enhancing readability in both bright surface conditions and dim underwater settings. This combination ensures that time can be read at a glance during critical dive moments.

 

• Luminous Application: Hands and markers glow for visibility in low-light conditions.
• Anti-Reflective Coating: Minimizes surface glare for clearer dial reading.
• Curved Crystal: Reduces distortion at oblique viewing angles.
• Date Window: Positioned for quick reference during planning and logging.

 

4. Durable Polyurethane Strap for Extended Wear

The polyurethane strap is chosen for its resilience in aquatic environments, resisting the degrading effects of saltwater, UV exposure, and temperature changes. Unlike leather or fabric, polyurethane does not absorb water, ensuring the strap does not swell, weaken, or cause skin irritation during prolonged wet wear. The buckle closure offers a secure fit that stays fixed even under the movement and pressure changes experienced while diving, while the strap remains supple enough for daily comfort.

 

• Material Composition: Injection-molded polyurethane formulated for underwater durability.
• Water Resistance: Does not absorb moisture, preventing swelling or degradation.
• Comfort Profile: Flexible construction conforms to wrist shape during active use.
• Buckle Closure: Reliable stainless steel buckle with multiple sizing options.

 

5. Substantial 48mm Stainless Steel Case

The 48mm case diameter establishes this watch as a large-format timepiece with commanding wrist presence, typical of professional dive instruments. The silver-tone stainless steel construction provides corrosion resistance in marine environments, while the case shape protects the crown and bezel from impact damage. With a weight of approximately 178-180 grams, the watch delivers a solid feel that reassures divers of its robustness without becoming cumbersome during extended wear.

 

• Case Width: 48mm, offering bold proportions and high readability.
• Case Material: 316L stainless steel with corrosion-resistant properties.
• Lug Width: 29mm, ensuring stable strap attachment.
• Thickness: Approximately 18mm, accommodating the robust dive construction.

 

6. Reliable Timekeeping with Date Function

Beyond its dive capabilities, the Promaster functions as a dependable everyday watch. The quartz movement maintains accuracy to within several seconds per month, surpassing mechanical movements in precision. The date window at the 3 o'clock position provides practical convenience for daily schedule management. The watch's luminous properties extend beyond diving scenarios, offering clear nighttime readability during evening activities or in darkened environments.

 

• Quartz Accuracy: Consistent timekeeping within typical quartz specifications.
• Date Display: Quick-set date function for easy adjustment.
• Night Visibility: Lume supports reading in near-zero light conditions.
• Daily Versatility: Suitable for office wear, outdoor activities, and travel.

 

The Citizen Men's Promaster Dive Eco-Drive Watch is best suited for scuba divers, snorkelers, and outdoor enthusiasts who require a reliable, ISO-certified timepiece that performs reliably underwater and on land. The combination of light-powered Eco-Drive technology, 300-meter water resistance, and luminous high-contrast dial makes it a practical instrument for those who value function-first design without sacrificing durability.

Specifications of Citizen Men's Promaster Dive Eco-Drive Watch, 3-Hand Date, Polyurethane Strap, ISO Certified, Anti-Reflective Curved Crystal, Screw-Back Case and Crown

Brand Name	Citizen
Model number	BJ8058-06L
Part Number	BJ8058-06L
Item Shape	Round
Dial window material type	Anti-Reflective Mineral Crystal
Clasp	Buckle
Case material	Stainless Steel
Case diameter	48 millimeters
Case Thickness	18.4 millimeters
Band Material	Polyurethane
Band width	32.1 millimeters
Band Color	Yellow
Dial color	Blue
Bezel material	Stainless Steel
Bezel function	Unidirectional
Calendar	Date
Special features	Glow In The Dark
Movement	Eco-Drive
Water resistant depth	300 Meters
Display Type	Analog

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Specifications
[Brand Name ]	Citizen
[Model number ]	BJ8058-06L
[Part Number ]	BJ8058-06L
[Item Shape ]	Round
[ Dial window material type ]	Anti-Reflective Mineral Crystal
[Clasp ]	Buckle
[Case material ]	Stainless Steel
[Case diameter ]	48 millimeters
[Case Thickness ]	18.4 millimeters
[Band Material ]	Polyurethane
[Band width ]	32.1 millimeters
[Band Color ]	Yellow
[Dial color ]	Blue
[Bezel material ]	Stainless Steel
[ Bezel function ]	Unidirectional
[ Calendar ]	Date
[Special features ]	Glow In The Dark
[ Movement ]	Eco-Drive
[ Water resistant depth ]	300 Meters
[Display Type ]	Analog

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