Seiko Cal. 6676 - 645

This Spring Drive model from 1969 features a 43mm PVD Black case. Powered by the 6676 caliber with 20j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-d1db41f80126]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

43mm

Case Thickness

11.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Navy

Jewels

20j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1969

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