Seiko Cal. 4420 - 578

The Seiko 4420-578 represents an important milestone in Seiko's 1991 lineup. It features a Burgundy dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-eff8f1f5af61]

Also known as: Monster, Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

42mm

Case Thickness

8.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Burgundy

Jewels

22j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1991

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