Seiko Cal. 4581 - 443

The Seiko 4581-443 represents an important milestone in Seiko's 1968 lineup. Powered by the 4581 caliber with 21j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-78e56cc2f76d]

Also known as: Samurai, Emperor

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

170m

Dial Color

Burgundy

Jewels

21j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1968

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