Seiko Cal. 5638 - 747

The Seiko 5638-747 represents an important milestone in Seiko's 1965 lineup. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-4fe865da65d0]

Also known as: Sportsmatic, Flighty

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

11.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1965

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