Seiko Astron Series Model equipped with 72X52 Purchased at Iyo-tetsu Takashimaya for around 210,000 yen. Recently, smartwatches have become mainstream, so I've kept this one. It's a solar GPS watch that doesn't require batteries, so it's running accurately. Please search the model number for specifications. The instruction manual is included, but the box and extra band links are not. I will sell it to someone who understands this. By the way, my left wrist is 17cm, and the watch fits loosely. The watch is heavy. There are some age-related scratches on the band.