Seiko Cal. 6391 - 358

This Automatic model from 1973 features a 37mm PVD Black case. With its 20mm lug width and 14.8mm profile, it sits comfortably on most wrists. [seikata-wm-dd4e6fd3ffd9]

Also known as: Monster

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

14.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Champagne

Jewels

17j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1973

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