Seiko Cal. 5633 - 738

The Seiko 5633-738 represents an important milestone in Seiko's 1973 lineup. Powered by the 5633 caliber with 26j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-3f55001315df]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

9.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Silver

Jewels

26j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1973

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