Seiko Cal. 4591 - 438

The Seiko 4591-438 represents an important milestone in Seiko's 1990 lineup. Powered by the 4591 caliber with 24j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-1ae38dc2cb88]

Also known as: Emperor

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

13.0mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Silver

Jewels

24j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1990

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