Seiko Cal. 5638 - 647

The Seiko 5638-647 represents an important milestone in Seiko's 1994 lineup. Powered by the 5638 caliber with 31j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-620a40b2fef4]

Also known as: Samurai

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

12.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Champagne

Jewels

31j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1994

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