This is Casios second world time model after the R-17/S-14 which has six time zones. The module 29 improved that with ten time zones and a different design. When this watch was released it retailed for $198 and you can easily see the quality in the case and bracelet (the bracelet is quite heavy and well made, very much like the Heuer Chronosplit bracelet of the same era).

WATCHES WITH MODULE 29

2043433