Seiko Cal. 0731 - 855

The Seiko 0731-855 represents an important milestone in Seiko's 1966 lineup. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-3aa0bbbbca65]

Also known as: Sumo, Goldfeather

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

40mm

Case Thickness

11.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

110m

Dial Color

Silver

Jewels

33j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1966

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