For sale is my Seiko SBBN037, the "Blue Fin Tuna." The watch is in excellent shape. Case, crystal and shroud are clean. Bezel and chapter ring line up straight, second hand hits on the markers. The blue silicon strap shows faint creases which are barely visible and do not show when on the wrist. Comes with box, booklet and warranty card. The price is $850 via Paypal, shipped in the US via USPS priority mail. Will consider an international sale if you pick up the shipping. Not interested in trades.


  • Battery powered, Caliber 7C46 quartz movement
  • Stainless steel case with Diashield coating
  • Diamond shield Case coating
  • Blue Silicon band, 22mm width
  • Blue bezel, Blue Dial
  • 300m waterproof for saturation diving
  • Screw lock type crown