Seiko Cal. 4531 - 903

The 4531-903 is a sought-after Spring Drive piece from Seiko's golden era. The Bidirectional bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-05ff0bf2f850]

Also known as: UFO, Rally

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

8.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Cream

Jewels

36j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1989

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