This is the popular Grand Seiko GMT watch, the SBGM221. It's the successor model that Shohei Ohtani wore at his Dodgers press conference. I purchased it used, having been worn only a few times, and bought a genuine black replacement strap from Mitsukoshi Isetan in Shinjuku for 34,100 yen, which I have replaced. The original brown genuine strap is also included. I wore it two or three times a month, so there are no major scratches, and the strap is not significantly worn, showing only a moderate amount of use. The watch was running fast, so I had it repaired and adjusted by Seiko Customer Service this September, and it has just been returned. Of course, it is still under warranty. On Mercari, it is often sold for around 520,000 yen, but this price is a bargain considering it's a February 2024 model with an extra strap. Please consider it.