Casio 50th Anniversary Limited Retro Style. : r/casio,Casio Watch 50th Anniversary | CASIO,Casio 50th Anniversary Casiotron Zero To One Black Dial Watch, 39.1mm,Our first ever ring-sized watch is here to celebrate the 50th anniversary of Casio Watches! The stylish full metal design of this timepiece features a jewelry-like gleam and still houses our standard,Casio Watch 50th Anniversary | CASIO MIDDLE EAST & AFRICA