Seiko Cal. 6633 - 375

The Seiko 6633-375 represents an important milestone in Seiko's 1979 lineup. Powered by the 6633 caliber with 18j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-b28cc0fc3ed8]

Also known as: Baby Tuna

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

35mm

Case Thickness

15.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1979

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