Vintage Casio W-31 Stainless Steel case & 593 module. Basically a metal bodied F-91! Does anyone know more about this range? : r/casio
Casio A 171 - Review and How to Tutorial - Module 593 - YouTube
Casio A158WA-1 Men's Vintage Metal Band Chronograph Alarm Digital Watch - Walmart.com
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
File:Casio F-91 Module 593 Displaying CASIo.jpg - Wikipedia
Vintage Casio F-91W Module 593 Working Made in Thailand | eBay
Casio A158 - Detailed How To Tutorial - Module 593 - YouTube