Seiko Cal. 6641 - 667

This Hand-Winding model from 1979 features a 41mm PVD Black case. Powered by the 6641 caliber with 34j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-783fdc77af83]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

13.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

180m

Dial Color

White

Jewels

34j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1979

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