Seiko Cal. 3890 - 631

The Seiko 3890-631 represents an important milestone in Seiko's 1984 lineup. It features a White dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-7fed4d9e44d7]

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

14.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

180m

Dial Color

White

Jewels

29j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1984

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