Seiko Cal. 6635 - 638

The Seiko 6635-638 represents an important milestone in Seiko's 1982 lineup. With its 18mm lug width and 14.6mm profile, it sits comfortably on most wrists. [seikata-wm-788198298a31]

Also known as: Silverwave, Baby Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

44mm

Case Thickness

14.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Black

Jewels

23j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1982

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