If your Casio watch is of 5121 module number (you can find these numbers on the back side of your watch) then this Live PDF Casio 5121 Official Manual suits you. All neccessary settings are perfectly described here with no need to download. You can offer this manual to your friends (that have the same watch) using social sharing. Thanks.
Important! If it takes too long time to open the manual on the page, you can go directly via this link https://casiofanmag.com/manuals/qw5121.pdf