Seiko Cal. 4431 - 396

This Solar model from 1977 features a 39mm PVD Black case. It features a Green dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-87bc744d96a1]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

39mm

Case Thickness

10.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

140m

Dial Color

Green

Jewels

22j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1977

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