Seiko Cal. 6677 - 642

The 6677-642 is a sought-after Hand-Winding piece from Seiko's golden era. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-f04176ab1bb4]

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

12.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1977

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