Citizen Watch Co. is launching two limited-edition Campanola Kōjō Eco-Drive watches, the BU0020-71N and BU0024-02N, in August 2026. These solar-powered timepieces feature triple calendar complications and astronomical designs inspired by shooting stars, with limited production runs of 170 to 250 pieces.
What are the specific details of the Campanola Kōjō limited editions?
Citizen Watch Co. has announced two distinct versions of the Campanola Kōjō. The first, reference BU0020-71N, features a stainless steel case paired with a blue dial and a stainless steel bracelet. This version is limited to 250 pieces.
The second version, reference BU0024-02N, utilizes a blacked-out Duratect DLC-coated stainless steel case and comes on a crocodile leather strap. This model is more exclusive, with only 170 pieces produced. Both models are individually numbered.
Both watches share several technical specifications:
- Case Diameter: 43.5 mm
- Case Height: 14.8 mm
- Crystal: Double-domed sapphire
- Water Resistance: 30 meters
- Price: Approximately US$2,430 (JPY 385,000 for the blue model; JPY 396,000 for the black model)
How does the Eco-Drive technology function in these models?
The watches are powered by the Citizen Eco-Drive calibre 8730. This movement uses solar panels concealed beneath the dial to recharge a lithium battery. Unlike traditional solar watches that may use a translucent dial, this calibre receives light through a gap between the dial and the sapphire chapter ring.
This design choice allows for more complex dial materials and sculptural elements. The movement can run for six months on a full charge once it enters its power-saving mode. The triple calendar complication, which includes a moon phase display, is adjusted using the crown and a single pusher located on the case band.
The evolution of solar-powered luxury
While many premium brands focus on mechanical movements, Citizen is positioning the Campanola sub-brand to compete in the multi-function solar quartz segment against brands like Seiko's Astron and Casio's Oceanus.
Why is the Kōjō design inspired by the night sky?
The name “Kōjō” refers to the radiant streaks of light seen when watching stars in the night sky. To replicate this, Citizen designed electro-formed blue and black dials featuring a radial mother-of-pearl disc surrounding the moon phase display.
The aesthetic includes a sapphire chapter ring with Roman numerals printed on the underside. A subtle tint is applied to the underside of this ring to create color shifts when viewed from different angles. The dial is supported by a quartet of pillars topped with four signature Campanola screws, which also serve to allow light to reach the solar cells.
| Feature | Ref. BU0020-71N | Ref. BU0024-02N |
|---|---|---|
| Case Material | Stainless Steel | Duratect DLC-coated Steel |
| Strap Type | Steel Bracelet | Crocodile Leather |
| Limited Edition Size | 250 pieces | 170 pieces |
Frequently Asked Questions
When will the Campanola Kōjō be available?
The watches are scheduled to be available at Citizen boutiques and retailers starting in August 2026.
What is the main difference between the two references?
The BU0020-71N is a stainless steel model with a blue dial and bracelet, while the BU0024-02N is a black DLC-coated model with a crocodile leather strap.
Does the watch require sunlight to charge?
No. According to Citizen, the Eco-Drive technology can feed on any visible light source, not just direct sunlight.
Which design do you prefer: the classic stainless steel or the blacked-out DLC version? Let us know in the comments below or subscribe to our newsletter for more horology updates.
