The Nerd Watch Message BoardTerrific forum for digital watch enthusiasts
Watchuseek Casio G-Shock forum Dynamic forum for G-shock enthusiasts
G-Peopleland  Fabulous G-shock site by Sjors from the Netherlands
vintage lcd digital watchProbably the biggest online collection of vintage Casios. Amazing !
Stefan's World of Vintage and Unused watches  Excellent and diverse Casio, and others, collection by Stefan Wehner from Germany
Cyril's Nerd Watch Casio collection  Terrific vintage Casio collection by Cyril from France
Slide Rule Wristwatches  Fascinating Slide Rule Wristwatch pages by Art Simon


spreadsheet  text_filekpatt's Japanese G-shock datasheet, 1983-2007
html  spreadsheet  pdfcasionerd's datasheet on early Casio modules, batteries and release dates
spreadsheet  text_file  htmlkpatt's Vintage G-shock datasheet
Instruction sheets for early modulesRepository of early module instruction sheets and some later ones.Many thanks to casionerd for permission to post these.
casionerd's vintage G-Shock pagesInformation on the first G-Shocks, supplied by casionerd.
casiophile's DW-5600C caseback articleInformation on the DW-5600C casebacks. On GMT+9
casiophile's G-Shock Wide Temp model article on eBayAn excellent guide to the much sought after WW-5100 and WW-5300 models vintage G-Shocks.
CFX-400/40 Manual - 3.5 MB fileCFX-400/40 (module 463) instruction manual. ( thanks to Kristopher and Fabian! )
BP -100 Manual*NEW* BP-100 MANUAL - thanks casiophile
htmlCasio Japan Catalogue 1992 ( Courtesy of pocketcalculatorshow)
html spreadsheet pdfComparative battery listing by company and model
Photography tipsBasic watch photography setup
Casio repair guideCovers battery installation etc