Seiko Cal. 3851 - 640

The Seiko 3851-640 represents an important milestone in Seiko's 1975 lineup. With its 22mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-fc3d222c2c48]

Also known as: Pogue, UFO

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

15.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Cream

Jewels

20j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1975

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