Seiko Cal. 6638 - 699

This Spring Drive model from 1979 features a 37mm Two-Tone case. With its 19mm lug width and 12.2mm profile, it sits comfortably on most wrists. [seikata-wm-3a3fc9562dd5]

Also known as: Samurai, Crown

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Navy

Jewels

21j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1979

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