Seiko Cal. 4431 - 404

The Seiko 4431-404 represents an important milestone in Seiko's 1985 lineup. With its 20mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-39b1699aea3a]

Also known as: Silverwave, Flighty

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

180m

Dial Color

Silver

Jewels

33j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1985

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