I keep going back to the Casio 593 (F-91W and A158) - menga.net
Casio A158 - Detailed How To Tutorial - Module 593 - YouTube
CASIO - A164W - Digital - Vintage Digital Watch - Digital-Watch.com
Back Light Spreader for Casio Module 593 F91W A158 A171 - Etsy
Casio W-39 Watch Module 593 - Etsy
RARE VINTAGE CASIO F-96W MODULE 593 JAPAN ALARM CHRONO - WORKING spare parts | eBay
File:Old Casio A158W back.jpg - Wikimedia Commons
Casio F-91W - Wikipedia
Casio A155W Module 593 Digital Watch yr 1989 In Rare Collectors Condition | WatchCharts
Casio Mens Vintage LCD Digital Watch W-39 (593 module) | WatchCharts
Casio F-91 User Manual / Module 593
CASIO F91W-1 Module 593 - YouTube
File:Old Casio module 593.jpg - Wikimedia Commons
Vintage Casio F-91W Module 593 Working | eBay
Casio A159w 593 module. : r/casio
Pin on C A S I O vintage
VINTAGE CASIO DIGITAL LCD WATCH F99-W MODULE 593 | #511749645
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
CASIO F-91W (Module 593) - How to Set the Time, Date, Alarm and use the Stopwatch. - YouTube