Seiko Cal. 6631 - 957

The 6631-957 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6631 caliber with 19j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-816d7e9a4f87]

Also known as: Pogue, Arnie

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

38mm

Case Thickness

15.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1970

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