Launched in April 1983 with a listed price of ¥11,400.
The FIRST Casio G-Shock.
Module: 240
Battery Type: CR2320
Came in two versions: DW-5000C-1A (red border) and DW-5000C-1B (gold border)
Within the border you can see fine brick-like prints which I think is particularly nice on this model.
The DW-5000C-1A is the more common version. It has red border on the dial.
The DW-5000C-1B is the uncommon version. It has gold border on the dial.