Seiko Cal. 6631 - 590

The Seiko 6631-590 represents an important milestone in Seiko's 1972 lineup. It features a Green dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-40071362a7bc]

Also known as: Goldfeather

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

34mm

Case Thickness

9.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

Green

Jewels

26j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1972

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