Seiko Cal. 6638 - 814

The 6638-814 is a sought-after Spring Drive piece from Seiko's golden era. It features a Green dial protected by a Acrylic crystal and offers 70m of water resistance. [seikata-wm-92733d8d8b75]

Also known as: Sportsmatic, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

15.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

70m

Dial Color

Green

Jewels

24j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1970

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