My dad's old DW 5600. He's been working manual jobs all his life and this bad boy went without a bezel for quite a few years till he retired it. It passed
G-Shock module 3229 & 1545 detailed tutorial & user guide on how to setup and use all the functions - YouTube
Amazon.com: Casio G-Shock DW-5600MNT-8JR [20 ATM Water Resistant Music Night Tokyo] : Clothing, Shoes & Jewelry
User manual Casio DW-5600E-1VER (English - 2 pages)