Seiko Cal. 6674 - 640

The Seiko 6674-640 represents an important milestone in Seiko's 1974 lineup. Powered by the 6674 caliber with 17j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-6e68aa6709ad]

Also known as: Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

10.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Cream

Jewels

17j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1974

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