Seiko Cal. 6331 - 650

The Seiko 6331-650 represents an important milestone in Seiko's 1968 lineup. The Fixed bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-a48f82bb495d]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

9.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

200m

Dial Color

Navy

Jewels

32j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1968

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