Seiko Cal. 3890 - 642

The Seiko 3890-642 represents an important milestone in Seiko's 1983 lineup. It features a White dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-24c9d3247d45]

Also known as: Navigator

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

39mm

Case Thickness

11.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

100m

Dial Color

White

Jewels

30j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1983

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