Seiko Cal. 3890 - 921

The Seiko 3890-921 represents an important milestone in Seiko's 1981 lineup. It features a Champagne dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-0c5a12f960ac]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

13.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Champagne

Jewels

21j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1981

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