Seiko Cal. 6631 - 326

The 6631-326 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6631 caliber with 24j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-fb9f9d1c9383]

Also known as: Goldfeather, Sea Horse

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

39mm

Case Thickness

11.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

White

Jewels

24j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1971

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