This is the Limited Edition 1970 Automatic Diver from Dan Hanry were only 1970 Pieces were made and sold out. 

Quality diver watch in 44 mm stainless steel 316L case and 24mm lug width. At 2 o’clock the crown operates the inner rotating bezel while the 4 o’clock crown adjusts the date and time. Screw-back case with Scaphtopus 3D media and Sapphire coated double domed glass with Anti-Reflective treatment

This model had the very reliable Automatic Seiko Caliber NH35 with 24 jewels, and a 41-hours power reserve.