Casio Watch Manuals and Guides Casio watches have adorned men's and women's wrists for decades. With digital and analog models available, you have plenty of options. Casio watch manuals and guides can provide you with instructions and additional information about your timepiece. What does a manual include? A manual will include a lot of details for your Casio watch, such as: • Anatomy: There will be a breakdown of the different parts and where they're located. • Instructions: Various features will be explained so you know how to use them.