Seiko Cal. 5633 - 672

The Seiko 5633-672 represents an important milestone in Seiko's 1969 lineup. Powered by the 5633 caliber with 20j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-7fe818798388]

Also known as: Golden Tuna, Baby Tuna

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

37mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1969

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