Seiko Cal. 4431 - 699

The 4431-699 is a sought-after Automatic piece from Seiko's golden era. It features a Black dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-e1ebbc0d22f9]

Also known as: Navigator

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Black

Jewels

17j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1978

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