Seiko Cal. 4431 - 999

The Seiko 4431-999 represents an important milestone in Seiko's 1983 lineup. It features a White dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-b10cf77c51ba]

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

13.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

White

Jewels

18j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1983

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