This is a Japanese domestic Casio G-Shock GWX-5600-1JF G-Lide model. It features Tough Solar, Tidal Graph, Moon Phases, Atomic Time, and many other functions like world time, stopwatch, alarm, etc. It does not require battery replacement or time adjustment. This watch has been occasionally used and shows light wear. It comes with the complete JDM set, which includes the original box, manual, and hang tags. Fast shipping with USPS.