Seiko Cal. 6131 - 156

This Hand-Winding model from 1974 features a 39mm Titanium case. With its 19mm lug width and 10.3mm profile, it sits comfortably on most wrists. [seikata-wm-68a1b2451265]

Also known as: World Timer

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

39mm

Case Thickness

10.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1974

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