Seiko Cal. 6631 - 569

The 6631-569 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6631 caliber with 31j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-d5b847379588]

Also known as: Goldfeather, World Timer

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

39mm

Case Thickness

11.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Champagne

Jewels

31j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1970

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