Seiko Cal. 4490 - 531

The 4490-531 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4490 caliber with 31j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-3aa33004bcd7]

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

14.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Burgundy

Jewels

31j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1978

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