CASIO - A164W - Digital - Vintage Digital Watch - Digital-Watch.com
Addicted to Module 593 | WatchCrunch
Casio A158 - Detailed How To Tutorial - Module 593 - YouTube
Module 415 swap with 593? : r/casio
Found out what some of the solder points on the module 593 are for. Those three that are marked are for timing adjust based on that table. This picture is from a