Casio Original Watch Parts G-Shock G-100, G-101 Shell/Bezel Accessory

Casio Watch Parts G-Shock G-100 Shell/Bezel 

Casio original Shell/Bezel in.  Made for Casio G-100.

Casio model numbers are engraved on the back of each watch, usually a letters a dash and numbers i.e. Dw-6900.