Seiko Cal. 0731 - 656

The 0731-656 is a sought-after Spring Drive piece from Seiko's golden era. It features a Black dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-d01cafd63b31]

Also known as: Pogue

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

8.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Black

Jewels

36j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1978

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