Seiko Cal. 4431 - 386

The Seiko 4431-386 represents an important milestone in Seiko's 1978 lineup. It features a White dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-2b38ef3ebd08]

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

180m

Dial Color

White

Jewels

25j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1978

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