Seiko Cal. 5643 - 931

The 5643-931 is a sought-after Spring Drive piece from Seiko's golden era. It features a Black dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-a01dfdfaabd2]

Also known as: Pogue, Crown

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

14.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

30m

Dial Color

Black

Jewels

28j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1984

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