Seiko Cal. 5638 - 488

The Seiko 5638-488 represents an important milestone in Seiko's 1971 lineup. The Inner Rotating bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-9179f564e6f6]

Also known as: Samurai, Rally

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

12.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Black

Jewels

36j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1971

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