These smaller Campanolas are beautiful, but 13.9 mm still makes me pause

The black Campanola with the little field of stars is the one I keep coming back to. There is a lot happening on that dial, but the dark background and small seconds keep it from looking like a collection of unrelated features. The lighter mother-of-pearl version is beautiful too. I'm giving this Small Seconds Mechanical family 103 out of 120 bezel clicks, with a fairly substantial reservation about the thickness.

Citizen announced these on November 10, with a planned December 3, 2026 Japanese release. NZ4000-56E, called Amamitsuhoshi, is limited to 100 pieces. NZ4000-56N, Kojo, is limited to 70. They share the new Y520 automatic platform and a 40 mm steel case, so they belong together as two dial executions. This is a first look from Citizen's material, not a hands-on review.

Two different ways of catching the light

Amamitsuhoshi uses black lacquer, metal powder and mother-of-pearl to create its starry appearance. I like how much empty dark space survives between the brighter details. The decoration looks concentrated enough to draw me in without making the actual time disappear. The small seconds also gives the lower part of the dial a clear purpose.

Kojo uses carved white mother-of-pearl, with lines radiating outward. Some of the published photographs look distinctly blue as the light catches it; Citizen identifies the material as white mother-of-pearl. I'd want to see that changing surface in person before deciding between them. A single photograph could sell me on a color that only appears at one angle.

The steel bracelet has lots of small links, and Citizen specifies a folding clasp opening to both sides. It looks appropriate for the layered case and dial. Whether the edges, articulation and clasp feel as good as they look is still unknown to me. I wouldn't describe bracelet comfort from a studio image.

Smaller diameter, substantial height

Forty millimeters sounds very promising. The 13.9 mm thickness is where I hesitate. On a chunky diver I can be more forgiving, but I would want this to sit fairly neatly under a sleeve. Citizen has given the dial, inner ring and curved sapphire a lot of depth; some of the height is part of the visual appeal I like. I still want to see the side profile on a wrist.

Calibre Y520 offers automatic and hand winding, hacking seconds and approximately 60 hours of reserve. Citizen states 0 to +14 seconds per day under its static measurement conditions. That is a manufacturer specification, not a result measured here. Water resistance is 5 bar.

Both watches are listed at ¥825,000 including Japanese tax. A verified US-dollar price and US allocation are unknown. Citizen lists selected Japanese retail channels, with slightly different store coverage for the two references. Import support, warranty handling and the actual thickness on my wrist would all need checking before I got carried away by that black dial.