Seiko Cal. 5643 - 307

The Seiko 5643-307 represents an important milestone in Seiko's 1976 lineup. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-41ff98e17461]

Also known as: Rally, Flighty

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

15.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Champagne

Jewels

29j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1976

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