The first Frogman model (DW-6300) was released in November 1993.[1][2] While Casio started to use a newer, four-screw back plate for its watches around that time, the DW-6300 retained the older screw-on back plate design. In June 1995, a second generation of the Frogman model was introduced, the DW-8200. From then on the Frogman became very popular among G-Shock collectors and many special editions were started to be introduced.