Casio F-84W Module 593 Mid 1980's Vintage Made JAPAN 'P' Digital Watch Rare | eBay
I keep going back to the Casio 593 (F-91W and A158) - menga.net
Casio A158WA-1 Men's Vintage Metal Band Chronograph Alarm Digital Watch - Walmart.com
CASIO A159W MODULE 593 Alarm Digital Chrono Vintage Men's Watch For Parts USM187 $35.00 - PicClick
casio 593 a164w,cheap - OFF 50% -charlotterealproducers.com
Very Rare 1990 Vintage CASIO W-31 (593) Japan H 33mm Watch - New Battery | eBay
Backlight Spreader for Casio Module 593 F91W A158 A171 - Etsy Sweden
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