Vintage Unworn Casio F-91W Module 593 Working Made in Thailand | eBay
CASIO A159W MODULE 593 Alarm Digital Chrono Vintage Men's Watch For Parts USM187 $35.00 - PicClick
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
RARE CASIO F-88W LCD WRISTWATCH 593 MODULE ALARM CHRONO WORKS NO BAND EXC | WatchCharts
Module 415 swap with 593? : r/casio
CASIO - A164W - Digital - Vintage Digital Watch - Digital-Watch.com
casio 593 a164w,cheap - OFF 50% -charlotterealproducers.com
Backlight Spreader for Casio Module 593 F91W A158 A171 - Etsy Sweden