Seiko Cal. 4425 - 320

The Seiko 4425-320 represents an important milestone in Seiko's 1966 lineup. It features a Black dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-5841ded2d9a7]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

9.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Black

Jewels

33j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1966

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