Citizen ATTESA Super Titanium™ Atomic Time Moon Phase 41.5mm Blue Dial [BY1000-51L]

The Citizen ATTESA BY1000-51L delivers a compelling blend of modern Japanese engineering, lightweight performance materials, and celestial complication—executed in a refined luxury sports profile. Built in Super Titanium™ with a matching triple-link bracelet, the 41.5 mm case offers exceptional scratch and corrosion resistance while remaining remarkably light and comfortable for daily wear.

The special-edition dial is where this piece truly separates itself, drawing inspiration from stained glass with layered tones that move through blue with deeper accents—creating a display that feels artistic yet highly legible. A moon phase display adds an elegant, collector-forward signature, while atomic timekeeping keeps the watch synchronized for precision you never have to think about.

Powered by Eco-Drive calibre H874, the BY1000-51L runs on any light source without the need for battery replacement. Practical travel-ready functionality includes world time across 24 time zones, a perpetual calendar programmed for long-term accuracy, and a day/date display. With 100 metres of water resistance and anti-reflective sapphire crystal, it’s a distinctive limited edition that balances artistry, technology, and real-world versatility.

Technical Specifications

• Model: BY1000-51L

• Collection: ATTESA

• Movement: Eco-Drive, Calibre H874

• Timekeeping: Atomic Timekeeping (Radio-Controlled)

• Case Size: 41.5 mm

• Case Colour: Silver-Tone

• Case Material: Super Titanium™

• Dial: Blue (special-edition, stained-glass-inspired)

• Crystal: Anti-Reflective Sapphire Crystal

• Bracelet: Super Titanium™ Bracelet

• Clasp: Fold Over Clasp with Push Button

• Water Resistance: WR100 / 10 bar / 333 feet

• Additional Functions: Moon Phase Indicator; World Time in 24 Time Zones; Day/Date; Perpetual Calendar; Radio-Controlled

• Limited Edition: 2,200 unnumbered pieces worldwide

• Warranty: 5-Year Citizen International Warranty

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