Seiko Cal. 5631 - 884

The 5631-884 is a sought-after Spring Drive piece from Seiko's golden era. It features a Champagne dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-8964b4b6616e]

Also known as: Pogue, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

11.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Champagne

Jewels

35j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1978

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