Seiko Cal. 6391 - 256

The 6391-256 is a sought-after Hand-Winding piece from Seiko's golden era. With its 20mm lug width and 9.1mm profile, it sits comfortably on most wrists. [seikata-wm-c92aff4ddb57]

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

9.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

110m

Dial Color

White

Jewels

18j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1968

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