Seiko Cal. 6642 - 790

The 6642-790 is a sought-after Hand-Winding piece from Seiko's golden era. With its 18mm lug width and 15.1mm profile, it sits comfortably on most wrists. [seikata-wm-05a7984aed5e]

Also known as: Baby Tuna, Emperor

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

15.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

Champagne

Jewels

36j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1976

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