SPF-100 / 2172 — ProTrek Wiki Casio Information
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File:Casio f91w digital watch.png - Wikimedia Commons
File:Casio F-91W 82T38575.jpg - Wikipedia
GW-9200 / 3147 — G-Shock Wiki Casio Information
PRG-40 / 2271 — ProTrek Wiki Casio Information
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Casio QV-10 - Camera-wiki.org - The free camera encyclopedia
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SPF-60 / 2782 — ProTrek Wiki Casio Information
Casio Watch | Wasteland 3 Wiki
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Casio F-91W “Che-Casi”, (short for Cheap Casio) in Japan.
The case of an iconic watch: how lazy writers and Wikipedia create and spread fake "facts" | KSNV
