New Releases · 2026-10-26
Rado True Square x Kunihiko Morinaga changes character in sunlight
A black high-tech ceramic square with a photochromic dial that darkens under ultraviolet light and reveals the movement indoors.
By Chronolume digest · Original English summary · Based on Rado official product page
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What to know
Rado’s True Square x Kunihiko Morinaga ref. R27086172 uses light itself as a design material. The photochromic dial darkens when exposed to ultraviolet light; away from it, the dial becomes transparent and allows the automatic movement to appear through the square case.
The monobloc case and bracelet are made from polished black high-tech ceramic. At 38 millimetres wide and 9.7 millimetres thick, the watch uses the visual reach of a square without becoming excessively tall.
Inside is the automatic Rado calibre R734, fitted with a Nivachron hairspring and specified for an 80-hour power reserve. The collaboration turns an already distinctive form into an optical object whose legibility and mechanical display change with its environment.