Seiko Cal. 6638 - 815

The Seiko 6638-815 represents an important milestone in Seiko's 1992 lineup. With its 20mm lug width and 11.2mm profile, it sits comfortably on most wrists. [seikata-wm-83121555b3f7]

Also known as: Goldfeather

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

11.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

29j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1992

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