Casio "C-Sphere" Dual-Display Ref. CSE-321

Part of Casio's niche early-2000s C-Sphere design series, the reference CSE-321 is a refined expression of Y2K architectural minimalism. Built around a vertically stacked dual-display concept, it pairs a clean, minimalist analog clock face with a lower digital LCD matrix housed inside a slender rectangular frame. Accentuated by side-case C-Sphere branding and an engraved swallow motif on the polished caseback, this complete Japanese-market set includes its original presentation box, module documentation, and spare links.

- NOS condition, never used, full set

- Year 2000

- 21x40 mm

- Extremely rare JDM watch