Advance athletic works wrist watch model AW21824W i need the user manual in order to know the features and how to set them?

I have an old watch, AW21817W, and I want to replace it with a new one. Where Can I find a store/ resource to purchase a new one since the old one still works and I have on trouble reseting all the features. The only fault is that the shiny stainless coating is greying and my effort to shine the surface has revealed a copper base plating. Phone number is 561 542 5348 in Deerfield Florida. Bill Blair - 1104 , 1216 S. Military Tr. ,Deerfield, Fla. #33442