Seiko Cal. 6391 - 255

This Hand-Winding model from 1973 features a 37mm PVD Black case. With its 19mm lug width and 12.3mm profile, it sits comfortably on most wrists. [seikata-wm-a9fdb16cca42]

Also known as: Monster

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

12.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

160m

Dial Color

Burgundy

Jewels

17j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1973

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