Seiko Cal. 6640 - 834

The Seiko 6640-834 represents an important milestone in Seiko's 1978 lineup. The Fixed bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-6147e8ed59db]

Also known as: Pogue

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

38mm

Case Thickness

8.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

40m

Dial Color

Cream

Jewels

28j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1978

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