Seiko Cal. 5633 - 676

The Seiko 5633-676 represents an important milestone in Seiko's 1980 lineup. Powered by the 5633 caliber with 31j jewels beating at 28,800 bph, it delivers a 64 hours power reserve. [seikata-wm-f1435afe5d5c]

Also known as: Rally, Sportsmatic

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Silver

Jewels

31j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1980

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