Seiko Prospex USA Exclusive "Ice Diver" Sumo SPB175 summer10 At the heart of the

At the heart of the Piccolo Watch Winder lies Orbita’s patented Rotorwind technology

Case size: 42mm

Diver’s uni-directional rotating bezel with bronze outside turning top ring

This 28 mm stainless steel model features a bezel engraved with Roman numerals

The OMEGA Master Chronometer calibre 8900 at the heart of this timepiece can be seen through the transparent caseback

Seiko Prospex USA Exclusive "Ice Diver" Sumo SPB175 summer10 At the heart of theReserved exclusively for collectors in the United States, this Seiko Prospex "Ice Diver" Sumo SPB175, is inspired by the many dynamic shades of glacier ice found in the world's polar extremes. Longtime fans of the Seiko Sumo will appreciate the Ice Diver's familiar silhouette, particularly its adherence to the wide, thin 44mm case silhouette and 200 meters of water resistance. However, this new reference upgrades the Sumo with Seiko's 6R35 automatic