Seiko Cal. 4581 - 690

The Seiko 4581-690 represents an important milestone in Seiko's 1966 lineup. Powered by the 4581 caliber with 36j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-53bcd58ae6f0]

Also known as: Emperor, Arnie

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

14.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

100m

Dial Color

Burgundy

Jewels

36j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1966

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