Seiko Cal. 4431 - 309

This Automatic model from 1988 features a 34mm Two-Tone case. Powered by the 4431 caliber with 21j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-faa8ba5c951f]

Also known as: Rally

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

34mm

Case Thickness

11.9mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

80m

Dial Color

Champagne

Jewels

21j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1988

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