Seiko Cal. 5631 - 649

The 5631-649 is a sought-after Quartz piece from Seiko's golden era. It features a Cream dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-ebb56973b5e2]

Also known as: Rally, Crown

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

10.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Cream

Jewels

27j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1965

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