Seiko Cal. 5643 - 639

The Seiko 5643-639 represents an important milestone in Seiko's 1982 lineup. It features a Silver dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-e079a600dd6d]

Also known as: Samurai, Bullhead

Specifications

Movement

Solar

Case Material

Titanium

Case Width

40mm

Case Thickness

11.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Silver

Jewels

30j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1982

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