Seiko Cal. 5633 - 900

The Seiko 5633-900 represents an important milestone in Seiko's 1980 lineup. The Bidirectional bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-73b293e88735]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

42mm

Case Thickness

14.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

70m

Dial Color

White

Jewels

34j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1980

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