Seiko Cal. 6635 - 490

The Seiko 6635-490 represents an important milestone in Seiko's 1968 lineup. With its 19mm lug width and 14.8mm profile, it sits comfortably on most wrists. [seikata-wm-77a45ff492ac]

Also known as: Monster, Crown

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

14.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Silver

Jewels

28j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1968

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