Seiko Cal. 4491 - 423

The Seiko 4491-423 represents an important milestone in Seiko's 1967 lineup. With its 18mm lug width and 10.1mm profile, it sits comfortably on most wrists. [seikata-wm-67e663eaf70d]

Also known as: Silverwave

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

10.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Black

Jewels

26j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1967

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