Seiko Cal. 6691 - 377

This Solar model from 1970 features a 39mm PVD Black case. Powered by the 6691 caliber with 24j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-a7d398f34259]

Also known as: Helmet, Goldfeather

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

39mm

Case Thickness

13.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

200m

Dial Color

Champagne

Jewels

24j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1970

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