Seiko Cal. 6331 - 189

The Seiko 6331-189 represents an important milestone in Seiko's 1977 lineup. The Inner Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-47e180292b41]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

15.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Burgundy

Jewels

22j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1977

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