Since I posted on the Casio MD-703, there have been some interest on the watch. One of the questions asked is where to find or replace the module in the watch. The watch came with the module 394. It is a basic 3 hand day-date (English and Spanish) module. I have not manage to find any module available on sale on the Internet and Casio no longer have the modules. So the other alternative is to buy another Casio with the module. Here lies the problem, what other Casio share the same module?
Module 394: made in Japan, unadjusted, 0 jewels.
Here is the list, but it is not comprehensive.
The cheapest of the lot is the MQ-61
I hope that helps.