Seiko Cal. 5638 - 726

The Seiko 5638-726 represents an important milestone in Seiko's 1975 lineup. The Coin-Edge bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-628c69a38fd1]

Also known as: Rally

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

13.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Navy

Jewels

28j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1975

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