Seiko Cal. 5643 - 607

This Spring Drive model from 1982 features a 43mm Hardlex-Coated Steel case. With its 21mm lug width and 12.9mm profile, it sits comfortably on most wrists. [seikata-wm-136f5bff39cc]

Also known as: Rally, Navigator

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

12.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

White

Jewels

28j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1982

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