Seiko Cal. 6391 - 701

This Spring Drive model from 1965 features a 40mm PVD Black case. With its 22mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-ca495a43bac5]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

13.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Navy

Jewels

27j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1965

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