Seiko Cal. 6631 - 950

The 6631-950 is a sought-after Solar piece from Seiko's golden era. Powered by the 6631 caliber with 20j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-855efa9da2a2]

Also known as: Monster, Golden Tuna

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

12.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

Champagne

Jewels

20j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1986

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