Seiko Cal. 5643 - 190

The Seiko 5643-190 represents an important milestone in Seiko's 1971 lineup. It features a Green dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-4f10cb02ce98]

Also known as: World Timer, Emperor

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

15.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

Green

Jewels

33j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1971

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