Seiko Cal. 5638 - 662

The 5638-662 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5638 caliber with 21j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-b76fd8e77903]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

12.0mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

80m

Dial Color

Cream

Jewels

21j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1986

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