Seiko Cal. 6638 - 136

The 6638-136 is a sought-after Quartz piece from Seiko's golden era. With its 21mm lug width and 8.8mm profile, it sits comfortably on most wrists. [seikata-wm-28b193a4214c]

Also known as: Crown, Emperor

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

8.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

200m

Dial Color

Green

Jewels

36j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1965

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