Seiko Cal. 4420 - 313

The 4420-313 is a sought-after Automatic piece from Seiko's golden era. It features a Navy dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-a780be6a1ccb]

Also known as: Samurai

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

15.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

40m

Dial Color

Navy

Jewels

31j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1978

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