Just found out that CWC is in Japan. CWC is the Cabot Watch Company and it manufactures watches for the British military. CWC is brought in by AGM Co Ltd. For those who are interested (and can read Japanese) the website:
It does not look as if they are carrying the full CWC products. Currently they are only offering mechanical watches from the CWC range of watches and the NATO straps, leather ones included.