This is a CASIO AD-729. It's a model known as the "Kajiki Diver" because of the marlin engraving on the back cover. The battery has been replaced, and the analog hands (hour, minute, and second) are working. The digital display can be seen, but the buttons are unstable, sometimes working and sometimes not, so it is being sold as junk. Detailed functions have not been confirmed. Please be aware of this. The dial ring (the part with numbers like 15 and 30) is misaligned. Please check the photos for the detailed condition of the exterior. Please consider this item assuming it needs repair, adjustment, or for parts. Only those who understand that this is a junk item, please purchase.