Seiko Cal. 6638 - 126

The 6638-126 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6638 caliber with 27j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-b38df32bd528]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

11.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

40m

Dial Color

Silver

Jewels

27j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1966

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