Citizen Expands UNITE With BLUE Series With A Limited Promaster E365
Citizen continues to push the boundaries of sustainable watchmaking with the release of the Promaster Dive E365 BN1025-08L, a striking new limited edition that joins the brand’s UNITE with BLUE series. This latest release ocean-inspired follows the BN1024-01Z, introduced earlier this year with a red gradient dial, and brings a vibrant new expression to Citizen’s growing family of professional-grade dive watches.
Encased in a 46 mm brushed stainless steel case with concealed lugs and a solid presence on the wrist, the BN1025-08L offers 300 meters of water resistance, making it well-equipped for serious underwater exploration. Its anti-reflective sapphire crystal ensures clarity at all depths, while the unidirectional rotating bezel, fitted with an easy-grip black insert and a luminous pip at 12 o’clock, allows precise dive timing in low-light conditions.
A Dial Made from the Sea—and for the Sea
The centerpiece of this edition is the dial: a 100% recycled polycarbonate surface crafted using pigment-free ink that reflects light through microscopic structures to produce a vibrant, dynamic spectrum of aquatic blue hues. Each glance reveals a subtle play of color that evokes the shifting tones of the ocean, paying homage to the seven seas that inspired the UNITE with BLUE initiative. This sustainable dial not only looks captivating but underscores Citizen’s broader commitment to environmental responsibility.
Large, luminous hands and markers offer exceptional legibility, even in the murkiest depths, while a lollipop seconds hand adds a functional yet refined touch. The date window, framed and placed adjacent to the screw-down crown at 4 o’clock, enhances usability without compromising the watch’s symmetrical aesthetic.
Built for the Deep
True to its Professional Diver designation, the watch includes a recessed helium escape valve at 2 o’clock, crucial for saturation diving. The solid, screw-down caseback is engraved with a deep-sea diving helmet motif—an emblem of the Promaster line’s heritage. The Eco-Drive Caliber E365 movement inside is powered by any light source and delivers a remarkable one-year power reserve, ensuring worry-free, battery-free operation.
Limited Edition with Purpose
Limited to 4,500 units worldwide, the Promaster Dive E365 BN1025-08L combines rugged diving functionality with environmental consciousness and design innovation. It comes paired with a durable black rubber strap made from BENEBiOL™ polyurethane—a plant-based material known for its comfort and resilience—secured by a stainless steel pin buckle etched with the Citizen signature.
Presented in a tactical black plastic box and priced at USD 750, this timepiece is not just a tool for adventure but also a testament to what modern, sustainable watchmaking can achieve.
More information here.
General Specifications:
Brand: Citizen
Model: Promaster Dive E365
Reference: BN1025-08L
Dial: Blue
Case Material: Stainless steel
Case Dimensions: 46 mm Diameter
Crystal: Sapphire Glass
Case Back: Stainless steel
Water Resistance: 300 Meters
Strap: Black BENEBiOL PU rubber strap with a steel pin buckle
Calibre: E365
Functions: Hours, minutes, seconds, date
Winding: Quartz Eco-Drive, solar powered
Price: USD 750
Availability: Now
Limited Edition: Yes, 4,500 pieces
