Seiko Cal. 4421 - 471

The 4421-471 is a sought-after Spring Drive piece from Seiko's golden era. It features a White dial protected by a Acrylic crystal and offers 120m of water resistance. [seikata-wm-96fbc89c3bb2]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

9.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

120m

Dial Color

White

Jewels

27j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1986

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