Model: Citizen Eco-Drive “Dome” BY0030-04E
Year: 2009 (Limited to 250 Pieces)
Features:
The Concept. The BY0030-04E debuted as a Concept Watch at Baselworld in 2009, and like any good concept watch, it pushes boundaries - not just visually but also in its use of materials. It’s beautifully futuristic, but the case materials standout as the most ambitious part of the BY0030-04E. The case features a titanium core coated in five layers of pearl. How? I have no idea. Citizen was tight-lipped about the process and has seemingly never attempted it again. Why? Allegedly for it’s scratch resistance - but it feels obvious they did it to impress.
The Case. The pearlescent effect is striking. Even from a distance, tiny iridescent specks flicker as light moves across the case. My best guess is that the coating is a ceramic blend infused with microscopic pearl fragments. Inspection under macro lens supports this theory, but Citizen has never confirmed anything beyond calling it “Pearl Coating”. Whatever the exact composition, the result is, at the very least, unique. Only 250 of the Pearl variant were produced (250 of a black DLC variant were also produced), and it retailed for ¥262,500 or $2900 at the time.
The Complications. Primarily, it's an Eco-Drive, and can hold a four year charge from full power. It features radio-controlled atomic timekeeping, ensuring absolute accuracy. And to ensure an accurate display, Citizen’s Perfex System automatically detects and corrects hand misalignment caused by shock or magnetism. The GMT City Selector allows for instant time zone changes via the crown (with automatic daylight savings adjustments). It also has a leap-year perpetual calendar, requiring no manual date adjustments. And finally, it’s an alarm, 1/5th-second chronograph, 24-hour subdial, and power reserve indicator.
The Case. By now, we’ve all seen most case shapes in existence, so I don’t typically draw attention to them, but I’m sure you’ll agree this alien mothership design deserves a second look. The ceramic crown is locked in by rectangular arms that extend from the underside of the case and grip the sapphire above. The crystal itself is dramatically domed – Citizen states this was designed to reflect as much light onto the dial as possible.
The Design. As individual elements, none of the above will necessarily blow you away, but together, they form something remarkable - especially when it looks like something from 2054. The floating chapter ring holds most of the text and indices, allowing them to cast shadows onto the layer beneath. And the finishing is a masterclass in contrast, with chamfered edges, concentric etchings, and mirror-polished surfaces all working together in perfect harmony.
Specifications:
Condition: In great, seemingly unworn, condition.
Scope: Full box and papers.
Movement: Citizen Prototype H611 Eco-Drive
Dimensions:
- Case Width: 48.0mm
- Lug to Lug: 50.6mm
- Case Thickness: 17.0mm
