These watches are 100% new. The module, the inside of the watch is a brand new  Casio G-Shock Model: DW5600E-1V.  https://www.amazon.com/Casio-G-shock-DW5600E-1V-Shock-Resistant/dp/B000GAYQKY/ref=sr_1_2?crid=ID7FH7GFX0N8&keywords=dw5600e&qid=1708330542&sprefix=dw5600%2Caps%2C373&sr=8-2

The bezel and strap are brand new aftermarket Aged MWB5000D-1 stainless steel metal made to fit the DW5600E. I remove the factory rubber bezel and strap. I install the metal bezel and bracelet. The DW5600E cost about $60 with taxes and shipping. The case are about $70 with taxes and shipping. Ebay charges a fee also. I make a small profit for assembly and handling. You can do it yourself and save a couple of dollars and wait about 6 weeks for shipping on the case. 

A factory built GMWB5000D-1 cost around $550 with taxes and shipping. It has solar, atomic time, and many other features. I have one and side by side you cannot tell the difference. 

Thanks for asking,

Robert