Seiko Cal. 6631 - 128

Released in 1987, the Cal. 6631 with design code 128 was part of Seiko's domestic market collection. It features a Green dial protected by a Acrylic crystal and offers 190m of water resistance. [seikata-wm-1ea548584f99]

Also known as: World Timer, Flighty

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

10.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Green

Jewels

30j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1987

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