Seiko Cal. 6391 - 375

The 6391-375 is a sought-after Hand-Winding piece from Seiko's golden era. With its 22mm lug width and 8.1mm profile, it sits comfortably on most wrists. [seikata-wm-2a0fc400b033]

Also known as: Sportsmatic, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

8.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Navy

Jewels

26j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1965

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