Seiko Cal. 5643 - 940

The 5643-940 is a sought-after Spring Drive piece from Seiko's golden era. It features a Green dial protected by a Mineral crystal and offers 160m of water resistance. [seikata-wm-48f669f6c451]

Also known as: Shogun, Helmet

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

10.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Green

Jewels

17j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1995

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