Naoya Hida Type 3B-1 Featuring a new moonphase complication, in the caliber 3021LU. The new caliber is based on the tried and true ETA/Valjoux 7750 ebauche, just like the sublimely minimal Naoya Hida calibers 3019 and 3020 that preceded it. Image credit Naoya Hida & Co.
