Seiko Cal. 5643 - 667

The Seiko 5643-667 represents an important milestone in Seiko's 1966 lineup. The Inner Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-78f0ef45c7ab]

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

9.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Burgundy

Jewels

20j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1966

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