Seiko Cal. 6377 - 420

The Seiko 6377-420 represents an important milestone in Seiko's 1969 lineup. With its 22mm lug width and 12.3mm profile, it sits comfortably on most wrists. [seikata-wm-4efa940e1644]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

42mm

Case Thickness

12.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

40m

Dial Color

Cream

Jewels

28j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1969

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