Seiko Presage SPB417 Sharp Edge Series Open Heart



Introduced in 2020, the Seiko Presage Sharp Edged Series quickly gained a reputation for its angular silhouette, distinctively patterned dial, and hands and indexes that reflect light while enhancing legibility. Revealing a powerful expression of Japanese artistry and aesthetics combined with state-of-the-art mechanical watchmaking, the series demonstrated the expansive skills and advanced manufacturing techniques of Seiko watchmaking. Today, a new three-day automatic movement and a new design join the Sharp Edged Series.

Like each Sharp Edged Series watch, the dials of the two new creations bear the signature asanoha, or “hemp-leaf” pattern. This distinctive motif has appeared on Japanese textiles since the Heian period over 1,000 years ago and is traditionally associated with a desire for growth and success. Composed of multiple layers, each three-dimensional dial comes to life through stamping, color gradation, and lap coating on the top layer, creating a rich texture.
The strong, angular case with an additional facet in mirror finish between the top and side surfaces, add an extra sparkle to the design.

New open heart movement

A new 6R series movement debuts with the latest Sharp Edged Series watches. With the new Caliber 6R5J, the latest creations boast an increased power reserve of three days when fully wound. The 21,600 vph automatic movement has indications for the hour, the minute, and the seconds, as well as a sub-dial for 24-hour indication at the 6 o’clock position. An eye-catching cut out at the 9 o’clock position shows the signature asanoha, or “hemp-leaf” pattern which matches the same pattern seen on the dial surface. The movement’s escapement can be viewed and enjoyed through this opening.

In recognition of the upgraded 72-hour power reserve, each watch’s dial reads “Automatic 3 Days.” The full expanse of Caliber 6R5J, including its gold-colored oscillating weight, is also visible through an exhibition case back.

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