Seiko Cal. 4431 - 622

The 4431-622 is a sought-after Automatic piece from Seiko's golden era. It features a Green dial protected by a Acrylic crystal and offers 70m of water resistance. [seikata-wm-c92ca927caac]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

8.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

70m

Dial Color

Green

Jewels

35j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1976

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