Seiko Cal. 6631 - 256

This Kinetic model from 1972 features a 39mm Two-Tone case. The Fixed bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-d00231009ccb]

Also known as: Navigator, Emperor

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

13.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

150m

Dial Color

Cream

Jewels

32j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1972

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