Seiko Cal. 6640 - 118

The Seiko 6640-118 represents an important milestone in Seiko's 1980 lineup. The Bidirectional bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-9ffa8daab920]

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

9.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Black

Jewels

19j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1980

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