Seiko Cal. 6658 - 635

The Seiko 6658-635 represents an important milestone in Seiko's 1968 lineup. With its 21mm lug width and 14.9mm profile, it sits comfortably on most wrists. [seikata-wm-2a219581f551]

Also known as: Silverwave

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

14.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Navy

Jewels

34j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1968

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