Seiko Cal. 6381 - 690

The Seiko 6381-690 represents an important milestone in Seiko's 1973 lineup. With its 21mm lug width and 15.5mm profile, it sits comfortably on most wrists. [seikata-wm-7029c39a2071]

Also known as: Bullhead, UFO

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

15.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Burgundy

Jewels

28j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1973

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