Seiko Cal. 5643 - 103

The Seiko 5643-103 represents an important milestone in Seiko's 1972 lineup. The Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-9bccb8cd51c1]

Also known as: Samurai, Sumo

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

9.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

140m

Dial Color

Black

Jewels

30j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1972

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