Citizen Series8 831 40mm Automatic Watch #NB6050-51W
39-NB6050-51W
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Model Reference: NB6050-51W
Overview
The Citizen Series 8 NB6050-51W is a flagship model within the 831 Mechanical series, representing a sophisticated reinterpretation of the modern sports watch. It is defined by its octagonal multi-piece case and a captivating textured green dial that takes inspiration from the interplay of light and shadow in Japanese urban landscapes. This timepiece is designed for those who value mechanical horology with a contemporary, industrial edge, offering a high-beat movement and advanced magnetic resistance in a slim, integrated silhouette.
Technical Specifications
Case Size: 40mm (Refined, versatile profile)
Case Material: Silver-Tone Stainless Steel (Multi-faceted with a mix of brushed and mirror-polished finishes)
Movement: Caliber 9051 Mechanical (High-beat automatic with a frequency of 28,800 vph and a 42-hour power reserve)
Crystal Type: Anti-Reflective Sapphire Crystal (Shatter-resistant with premium clarity)
Water Resistance: 100 Meters (10 ATM / 333 feet) — Suitable for swimming and daily versatile wear
Dial: Forest green with a subtle sunray texture, applied indices, and a date window at 3 o'clock
Bezel: Polished stainless steel fixed bezel
Strap: Silver-tone stainless steel H-link bracelet with a fold-over clasp and hidden push-buttons
Special Features
Enhanced Magnetic Resistance: The Caliber 9051 is engineered to maintain accuracy even when exposed to magnetic fields of up to 16,000 A/m (approx. 200 gauss), making it highly resistant to the interference of modern electronic devices.
Multi-Piece Case Construction: The case is built from multiple separate components, allowing Citizen to apply distinct finishing techniques—such as sharp satin brushing and high-gloss Zaratsu-style polishing—to individual facets for a high-jewelry aesthetic.
High-Beat Precision: Operating at 8 beats per second ($4\text{ Hz}$), the movement provides a smooth sweeping second hand and more stable timekeeping compared to standard mechanical watches.
Captivating "Tokyo Skyline" Dial: The green dial features a unique texture that captures light at different angles, transitioning from a vibrant emerald to a dark, deep forest green depending on the environment.
Slim Profile Architecture: Despite its mechanical complexity and magnetic shielding, the watch maintains a remarkably thin height (approx. 10.1mm), allowing it to slip easily under a shirt cuff.
Exhibition Case Back: A transparent sapphire window on the reverse side showcases the industrial finish of the Caliber 9051 movement and its oscillating rotor.
Integrated Ergonomics: The H-link bracelet is designed to taper toward the clasp, distributing weight evenly for a "second-skin" feel on the wrist.
High-Contrast Legibility: Bold, silver-framed baton indices and sharp "sword" hands are treated with luminous material, ensuring the time is easily readable in low-light conditions.
Overview
The Citizen Series 8 NB6050-51W is a flagship model within the 831 Mechanical series, representing a sophisticated reinterpretation of the modern sports watch. It is defined by its octagonal multi-piece case and a captivating textured green dial that takes inspiration from the interplay of light and shadow in Japanese urban landscapes. This timepiece is designed for those who value mechanical horology with a contemporary, industrial edge, offering a high-beat movement and advanced magnetic resistance in a slim, integrated silhouette.
Technical Specifications
Case Size: 40mm (Refined, versatile profile)
Case Material: Silver-Tone Stainless Steel (Multi-faceted with a mix of brushed and mirror-polished finishes)
Movement: Caliber 9051 Mechanical (High-beat automatic with a frequency of 28,800 vph and a 42-hour power reserve)
Crystal Type: Anti-Reflective Sapphire Crystal (Shatter-resistant with premium clarity)
Water Resistance: 100 Meters (10 ATM / 333 feet) — Suitable for swimming and daily versatile wear
Dial: Forest green with a subtle sunray texture, applied indices, and a date window at 3 o'clock
Bezel: Polished stainless steel fixed bezel
Strap: Silver-tone stainless steel H-link bracelet with a fold-over clasp and hidden push-buttons
Special Features
Enhanced Magnetic Resistance: The Caliber 9051 is engineered to maintain accuracy even when exposed to magnetic fields of up to 16,000 A/m (approx. 200 gauss), making it highly resistant to the interference of modern electronic devices.
Multi-Piece Case Construction: The case is built from multiple separate components, allowing Citizen to apply distinct finishing techniques—such as sharp satin brushing and high-gloss Zaratsu-style polishing—to individual facets for a high-jewelry aesthetic.
High-Beat Precision: Operating at 8 beats per second ($4\text{ Hz}$), the movement provides a smooth sweeping second hand and more stable timekeeping compared to standard mechanical watches.
Captivating "Tokyo Skyline" Dial: The green dial features a unique texture that captures light at different angles, transitioning from a vibrant emerald to a dark, deep forest green depending on the environment.
Slim Profile Architecture: Despite its mechanical complexity and magnetic shielding, the watch maintains a remarkably thin height (approx. 10.1mm), allowing it to slip easily under a shirt cuff.
Exhibition Case Back: A transparent sapphire window on the reverse side showcases the industrial finish of the Caliber 9051 movement and its oscillating rotor.
Integrated Ergonomics: The H-link bracelet is designed to taper toward the clasp, distributing weight evenly for a "second-skin" feel on the wrist.
High-Contrast Legibility: Bold, silver-framed baton indices and sharp "sword" hands are treated with luminous material, ensuring the time is easily readable in low-light conditions.
Estimated production and handling times vary and are indicated individually on each item's page. All online orders are shipped with Canada Post priority mail unless otherwise arranged. Shipping transit times to Canada and the USA is around 3-6 business days depending on the location. Upon receiving successful payment for a product, we will provide an estimated delivery date for the product to be shipped via email.
