Kikuchi Nakagawa Vaucher 5401

The Vaucher 5401 is a micro-rotor automatic movement manufactured by Kikuchi Nakagawa, based on a Vaucher Manufacture Fleurier ebauche. It measures 30mm in diameter and 2.6mm thick, operates at 21,600 bph with a 48-hour power reserve, and contains 29 jewels. The movement features a ceramic ball bearing rotor with Incabloc shock protection and is finished and decorated in-house by Kikuchi Nakagawa. It is used in the Ichimonji and remains in production.