GW-M5610BC-1JF swapped with a positive display module from a GW-M5610-1 then converted to a metal "vintage black" bezel and bracelet from AliExpress | WatchUSeek Watch Forums
Casio] Picked up this used square 5610BC with the "Combi" bracelet for $60 : r/Watches
Casio GW-M5610BC Review | BladeReviews.com
Casio] 5610BC + TVA mod kit : r/Watches
WTS] Casio G-SHOCK gwm-5610bc with combi bracelet and metal kit : r/watch_swap