Seiko Cal. 6631 - 141

This Automatic model from 1970 features a 39mm Stainless Steel case. Powered by the 6631 caliber with 25j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-aef7e215660c]

Also known as: Navigator

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

11.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Burgundy

Jewels

25j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1970

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