Seiko Cal. 5643 - 493

The 5643-493 is a sought-after Spring Drive piece from Seiko's golden era. The Fixed bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-fdbd7ebdd1d2]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

9.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Silver

Jewels

35j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1978

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