Seiko Cal. 4427 - 371

The 4427-371 is a sought-after Spring Drive piece from Seiko's golden era. It features a Burgundy dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-01a7db5653ce]

Also known as: Rally, Sea Horse

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

12.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Burgundy

Jewels

31j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1966

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