Seiko Cal. 4431 - 531

This Automatic model from 1975 features a 34mm Titanium case. Powered by the 4431 caliber with 32j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-5044989b4b49]

Also known as: Rally

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

34mm

Case Thickness

10.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

Black

Jewels

32j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1975

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