Casio Module 5000

The Module 5000 is a quartz caliber manufactured by Casio and launched in 1983 as the first movement in the G-Shock line. It established the core architecture that defined G-Shock's shock-resistant design philosophy. The movement is discontinued but remains historically significant as the foundation for one of the most enduring watch families in modern horology. The DW-5000C references the original case design that continues in production through later G-Shock iterations.