Seiko Cal. 6391 - 231

The Seiko 6391-231 represents an important milestone in Seiko's 1997 lineup. With its 22mm lug width and 12.4mm profile, it sits comfortably on most wrists. [seikata-wm-1d2fb379e320]

Also known as: Bullhead

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

12.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Black

Jewels

36j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1997

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