Seiko Cal. 4421 - 933

The 4421-933 is a sought-after Spring Drive piece from Seiko's golden era. It features a Green dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-a1720b0d719d]

Also known as: Shogun, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

8.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1978

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