Seiko Cal. 4590 - 931

The 4590-931 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4590 caliber with 29j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-ac5571944cf8]

Also known as: Turtle, Goldfeather

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

14.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

60m

Dial Color

White

Jewels

29j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1978

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