Seiko Cal. 5633 - 738

Seiko 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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