Citizen Promaster Dive Ecozilla 300M Eco-Drive 48 mm Blue Dial Watch [BJ8058-06L]

The Citizen Promaster Dive Ecozilla BJ8058-06L is one of the most iconic professional dive watches ever produced by Citizen. Instantly recognizable by its massive case architecture and unapologetically tool-focused design, the Ecozilla has earned cult status among dive-watch enthusiasts around the world. Built for extreme durability and uncompromising underwater performance, it represents everything that has made the Promaster collection legendary among professional divers and adventure seekers. 

With its imposing 48 mm stainless steel case, deep blue dial, and striking yellow polyurethane strap, the BJ8058-06Ldelivers unmistakable wrist presence. Unlike many modern dive watches that prioritize vintage styling or luxury finishing, the Ecozilla was designed first and foremost as a serious underwater instrument. Every component exists to enhance performance, durability, and legibility in demanding conditions. 

Among Citizen collectors, the Ecozilla has become one of the most respected and recognizable Promaster references, often regarded as one of the ultimate expressions of Citizen's professional dive-watch heritage.

The Legend of the Ecozilla

Few watches have earned a nickname as fitting as "Ecozilla."

The name combines Citizen's revolutionary Eco-Drive technology with the watch's enormous, purpose-built case design. The result is a dive watch that commands attention while delivering genuine professional-grade capability. Enthusiasts have embraced the Ecozilla for years because it refuses to compromise its tool-watch identity in pursuit of trends or fashion. 

Its bold architecture has made it one of the most recognizable watches in the entire Citizen catalogue and a favourite among collectors who appreciate authentic tool watches.

Eco-Drive Reliability

At the heart of the BJ8058-06L is Citizen's proven Calibre B873 Eco-Drive movement.

Powered by any natural or artificial light source, Eco-Drive continuously converts light into stored energy, eliminating the need for routine battery replacement. The result is exceptional reliability, reduced maintenance requirements, and dependable long-term performance.

For a professional dive watch, this reliability is particularly valuable because owners never need to worry about battery changes compromising water resistance or interrupting use. 

Professional Diver 300 Metres

The Ecozilla was engineered for serious underwater use.

Its robust stainless-steel construction, screw-down crown, highly legible dial, luminous hands and markers, and unidirectional elapsed-time bezel combine to create a genuine professional diving instrument. Water resistance is rated to an impressive 300 metres, exceeding the requirements of many recreational diving applications. 

The oversized case allows for exceptional dial legibility, ensuring information remains visible even in challenging underwater environments.

Built Like a Tool Watch

Everything about the Ecozilla communicates durability.

The substantial stainless-steel case provides exceptional protection for the movement, while the anti-reflective crystal improves visibility in bright conditions. The yellow polyurethane strap offers excellent comfort and flexibility while remaining resistant to the harsh conditions encountered during diving, boating, and outdoor activities. 

This is not a watch designed to imitate a professional diver. It is a watch built to function as one.

A Cult Favourite Among Collectors

Over the years, the Ecozilla has developed a passionate following among Citizen enthusiasts.

Collectors appreciate its unapologetically functional design, outstanding durability, and unique position within the world of modern dive watches. While many brands pursue vintage-inspired aesthetics, the Ecozilla remains proudly modern, oversized, and purpose-driven.

For many Promaster enthusiasts, owning an Ecozilla is almost a rite of passage.

Why Choose the Citizen Promaster Dive Ecozilla BJ8058-06L?

• Legendary Ecozilla case design
• Eco-Drive Calibre B873
• Professional 300-metre water resistance
• Anti-reflective crystal
• Deep blue dial with exceptional legibility
• Durable yellow polyurethane strap
• Screw-down crown
• Professional dive-watch capability
• Cult-collector status
• One of the most iconic Promaster models ever produced

Citizen Authorized Dealer

When you purchase the Citizen Promaster Dive Ecozilla BJ8058-06L from Mani Jewellers, you receive a brand-new, factory-fresh timepiece complete with original Citizen presentation box, manuals, and full manufacturer warranty coverage.

Perfect For

• Professional and recreational divers
• Tool-watch enthusiasts
• Promaster collectors
• Eco-Drive enthusiasts
• Adventure travellers
• Buyers seeking an alternative to oversized professional dive watches from Seiko and other major dive-watch manufacturers

Technical Specifications

• Model Number: BJ8058-06L
• Collection: Promaster Dive Ecozilla
• Movement: Eco-Drive
• Calibre: B873
• Case Size: 48 mm
• Case Thickness: 18.6 mm
• Case Material: Stainless Steel
• Crystal: Anti-Reflective Sapphire Crystal
• Dial Colour: Blue
• Bezel: Unidirectional Elapsed-Time Dive Bezel
• Strap: Yellow Polyurethane Strap
• Clasp: Buckle
• Crown: Screw-Down Crown
• Water Resistance: 300 Metres / 30 Bar
• Functions: Hours, Minutes, Seconds, Date
• Luminous Features: Hands and Markers
• Country of Manufacture: Japan
• Warranty: 5-Year Citizen International Warranty 

Citizen Authorized Dealer | 5-Year Citizen International Warranty | Free Shipping Within Canada