Seiko Cal. 7139 - 520

This Hand-Winding model from 1975 features a 38mm Titanium case. With its 20mm lug width and 11.8mm profile, it sits comfortably on most wrists. [seikata-wm-4eb9afd25fdc]

Also known as: Sumo, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

38mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

40m

Dial Color

Cream

Jewels

24j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1975

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