Seiko Cal. 6391 - 324

Released in 1971, the Cal. 6391 with design code 324 was part of Seiko's domestic market collection. It features a Burgundy dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-c0ef75249cda]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

13.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Burgundy

Jewels

31j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1971

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