Seiko Cal. 4581 - 390

The Seiko 4581-390 represents an important milestone in Seiko's 1969 lineup. Powered by the 4581 caliber with 27j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-1c0910e286ba]

Also known as: World Timer, Arnie

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

11.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

60m

Dial Color

Burgundy

Jewels

27j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1969

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