Model SBDX-001 / 8L35-0010 300M Professional grade automatic dive watch. This is from Seiko’s top-tier Prospex line and to my knowledge this model was not imported to the US market. To get one you had to buy it overseas (the original owner of this watch bought it from a retailer in Japan). If you’re looking for a legit tool watch you can wear daily, dive with, and which still looks classy enough to wear with a suit (ala Rolex Deepsea), this is the one. I’m the second owner of this watch, and it’s in great shape. Comes with original box, paperwork, 3 total straps (metal bracelet, rubber, and leather); also comes with new OEM bezel (hard to find / $$$) should the one that’s on the watch ever need replacing. Link to review of this watch.