Seiko Cal. 5638 - 229

The Seiko 5638-229 represents an important milestone in Seiko's 1970 lineup. The Fixed bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-b719a971f2fd]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

12.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Silver

Jewels

20j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1970

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