This seems to be a JDM-only model, with very little info about it to be found. Probably late 90s or early 00s, the standard version is stainless steel, while the fancy one here is titanium. The EL backlight stays on for 1.5s after the button is released, and can be set to auto-light. The 24h timer can be set to auto-repeat, and a has a resolution of one second! This is a nice watch. It’s an interesting re-imagining of a 70s model like the old 503 style case, although sadly not part of the 90s Casiotron revival.

Download manual (translated, no diagrams)