Seiko Cal. 5646 - 637

The 5646-637 is a sought-after Quartz piece from Seiko's golden era. It features a Champagne dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-e588bce39ea7]

Also known as: Shogun, Silverwave

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

39mm

Case Thickness

11.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Champagne

Jewels

27j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1971

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