Seiko Cal. 5643 - 337

The 5643-337 is a sought-after Kinetic piece from Seiko's golden era. It features a White dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-a7a511e27258]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

9.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

180m

Dial Color

White

Jewels

19j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1968

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