Unbelievable! £32 Casio G-Shock Mudmaster WR20BAR from the Gate - everything works like the original, including the 'hidden' manual hands adjust setting mechanism from the original. Amazing. : r/ChinaTime
Casio G-shock GWG-1000 MUDMASTER - TIME ZONE SETTING - YouTube
CASIO G-SHOCK MUDMASTER GWG-1000-1A3JF MADE IN JAPAN JDM – japan-select
G-Shock Casio GWG-1000-1A9JF MUDMASTER Tough Solar Multiband Box Manual Japan | eBay