Seiko Cal. 3863 - 657

The Seiko 3863-657 represents an important milestone in Seiko's 1980 lineup. With its 20mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-1be2bb01f96c]

Also known as: Turtle

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

46mm

Case Thickness

15.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

White

Jewels

22j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1980

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