Seiko Cal. 6139 - 256

This Hand-Winding model from 1977 features a 44mm Titanium case. With its 18mm lug width and 11.1mm profile, it sits comfortably on most wrists. [seikata-wm-70efa64a63f7]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

44mm

Case Thickness

11.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1977

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