Seiko Cal. 6391 - 451

Released in 1973, the Cal. 6391 with design code 451 was part of Seiko's domestic market collection. It features a Black dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-699ac9632ca9]

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

9.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Black

Jewels

27j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1973

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