Genuine Casio black resin watch band made for the following G-Shock models: 

GA-100      GA-100C

GA-100MB     GA-110

GA-110MB     GA-120

GA-120BB     GAC-100

GA-300      G-8900

GD-100     GD-120MB

GR-8900     GR-8900A

GW-8900     GW-8900A

Note: The picture of the GA-100 watch is for reference only.