Seiko Cal. 4490 - 921

The Seiko 4490-921 represents an important milestone in Seiko's 1971 lineup. Powered by the 4490 caliber with 31j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-8ccac8247249]

Also known as: Sea Horse

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

45mm

Case Thickness

12.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1971

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