Seiko Cal. 5664 - 637

This Spring Drive model from 1987 features a 35mm Titanium case. With its 20mm lug width and 9.9mm profile, it sits comfortably on most wrists. [seikata-wm-daf798aa1893]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

9.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Cream

Jewels

34j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1987

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