Seiko Cal. 3831 - 635

The Seiko 3831-635 represents an important milestone in Seiko's 1968 lineup. The Inner Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-cd17ff7ca94d]

Also known as: Samurai

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

10.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Cream

Jewels

32j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1968

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