Movement... Quartz/Battery Operated This is a Longines Wittnauer digital watch. The band size should fit Japanese sizes without any problems. I'm impressed that Longines had a design similar to the current Apple Watch design almost 40 years ago. It only displays the date and time, with no unnecessary functions. There are almost no scratches, but please understand that this is a vintage item. It seems you set the time by pressing two buttons simultaneously (I always have a watch shop set it for me). I haven't used it, and it's been displayed in a box. *March 5, Reiwa 7 (2025) New battery replaced. *⚠️Please refrain from bidding if you are a new user or have a history of many questions. Recommended for those who like G-Shock and Omega digital watches. Operation... Good Scratches/Cracks... None #Bonus