Seiko Cal. 4425 - 327

The Seiko 4425-327 represents an important milestone in Seiko's 1966 lineup. It features a Black dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-0296e521606e]

Also known as: Monster, Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

44mm

Case Thickness

15.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Black

Jewels

30j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1966

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