Seiko Cal. 6631 - 474

The 6631-474 is a sought-after Solar piece from Seiko's golden era. Powered by the 6631 caliber with 27j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-e8af2fd380d5]

Also known as: Goldfeather, Baby Tuna

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

12.4mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Cream

Jewels

27j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1980

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