Seiko Cal. 6636 - 648

The 6636-648 is a sought-after Quartz piece from Seiko's golden era. It features a Champagne dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-6f30ad5e0990]

Also known as: Sea Horse

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

39mm

Case Thickness

15.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

Champagne

Jewels

20j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1974

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