The SPB337 (SBDC185 JDM) Alpinist has a textured back dial and case measuring 39.5 x 13.2 x 46.4mm. It was a limited edition of 5500 units. Both models utilize the automatic 6R35 calibre. View fullsize SPB335 (SBDC183 JDM) View fullsize SPB337 (SBDC185 JDM) A new cave diver ...