Seiko Cal. 6638 - 813

The Seiko 6638-813 represents an important milestone in Seiko's 1985 lineup. With its 18mm lug width and 9.2mm profile, it sits comfortably on most wrists. [seikata-wm-76e4292ee846]

Also known as: Turtle, Goldfeather

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

46mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Burgundy

Jewels

23j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1985

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