Seiko Cal. 4431 - 978

The 4431-978 is a sought-after Solar piece from Seiko's golden era. It features a Green dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-6249f3ab3416]

Also known as: Bullhead

Specifications

Movement

Solar

Case Material

Titanium

Case Width

34mm

Case Thickness

15.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

160m

Dial Color

Green

Jewels

23j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1983

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