Citizen Attesa Limited Edition: The Intersection of Art and Atomic Time
The Citizen Attesa BY1000-51L “Stained Glass” is a high-impact 42mm timepiece that redefines the luxury sports category. Fusing Super Titanium™ construction with the world’s first radio-controlled moon phase movement, this watch is a limited-edition masterclass in Japanese technical artistry.
Visual Audit: The Mother-of-Pearl “Starry Night”
Our visual audit confirms a breathtaking palette of iridescent blues and purples, designed for the collector who values mechanical transparency and artistic depth.
- Stained Glass Dial: A blue Mother-of-Pearl base treated with inkjet printing to create a kaleidoscopic, multi-coloured light effect.
- Automatic Moon Phase: A high-detail lunar register at 6 o’clock that calculates moon age automatically via atomic radio signals.
- Duratect Platinum Finish: A brilliant light-silver coating that provides the lustre of precious metal with the hardness of industrial titanium.
Material Verification: Space-Age Super Titanium™
The BY1000-51L is constructed using Citizen’s proprietary Super Titanium™ to ensure the watch is 40% lighter than steel while being five times more scratch-resistant.
- Duratect Platinum 316L Case: A hypoallergenic, ultra-hard titanium chassis designed for maximum comfort and durability.
- Anti-Reflective Sapphire Crystal: Dual-spherical sapphire with a non-reflection coating that makes the glass virtually invisible.
- Triple-Link Titanium Bracelet: A lightweight, high-comfort bracelet featuring a fold-over clasp with a micro-adjuster for the perfect fit.
Mechanical Functionality: The Eco-Drive Calibre H874
Beneath the iridescent dial lies the H874 movement, a technical marvel that synchronizes with atomic clocks across four continents.
- Atomic Moon Phase: The world’s first automatic lunar calculation movement with Northern/Southern hemisphere switching.
- Global Radio Control: Receives time signals from Japan, China, USA, and Europe for perfect accuracy.
- 2.5 Year Power Reserve: Eco-Drive technology ensures the watch remains powered by light, with a massive reserve in power-save mode.
Technical Specifications
| Attribute | Specification |
|---|---|
| SKU Reference | BY1000-51L |
| EAN Code | 8018225041717 |
| Case Size | 41.5 mm (Men’s) |
| Movement | Eco-Drive H874 Moon Phase (Radio-Controlled) |
| Dial Material | Blue Mother-of-Pearl (Stained Glass Effect) |
| Case Material | Super Titanium™ (Duratect Platinum) |
| Water Resistance | 100 Metres (10 ATM) |
| Limited Edition | 2,200 Pieces Worldwide |
The Citizen Attesa BY1000-51L is delivered in a limited-edition “DEAR Collection” presentation box and includes a 3-year international manufacturer’s warranty.


