Otsuka Lotec No. 5 Kai - Serial #24770 (Pre-Owned) GoS it was Radiomir which was

it was Radiomir which was strapped to wrist of the Frogmen for their missions

The dial with alternating grey and silver elements including the polished Breguet numerals really work magic in any lighting condition

and a titanium balance wheel with white gold inserts operating at 4Hz

Furnished on the OEM black calfskin strap with steel Otsuka Lotec pin buckle

The reverse side reveals Habring²'s Manufacture A11U movement which beats at 4Hz and delivers a power reserve of 48 hours

Otsuka Lotec No. 5 Kai - Serial #24770 (Pre-Owned) GoS it was Radiomir which wasCrafted by the visionary Jiro Katayama in his Tokyo studio, the No. 5 Kai is a masterclass in industrial brutalism and mechanical ingenuity. Courtesy of a module designed and built by Mr. Katayama, a wandering hour time display is implemented by way of three satellite hour discs traveling along the minute track positioned on the 3 o'clock side. Adjacent to the minute track lies a rotating disc indicating the seconds, and to the left of this disc is a