Seiko Cal. 6634 - 658

The Seiko 6634-658 represents an important milestone in Seiko's 1975 lineup. With its 18mm lug width and 14.4mm profile, it sits comfortably on most wrists. [seikata-wm-91b250bc7054]

Also known as: Arnie

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

14.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

160m

Dial Color

Green

Jewels

29j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1975

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