Seiko Cal. 4431 - 132

This Spring Drive model from 1983 features a 36mm Hardlex-Coated Steel case. Powered by the 4431 caliber with 28j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-2de3772ce042]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

9.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

170m

Dial Color

Navy

Jewels

28j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1983

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