Seiko Cal. 6377 - 638

The 6377-638 is a sought-after Hand-Winding piece from Seiko's golden era. With its 18mm lug width and 12.1mm profile, it sits comfortably on most wrists. [seikata-wm-aeb951df9a19]

Also known as: Tuna, Navigator

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

12.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

Burgundy

Jewels

18j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1986

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