Seiko Cal. 4490 - 612

The Seiko 4490-612 represents an important milestone in Seiko's 1975 lineup. Powered by the 4490 caliber with 31j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-5ddea1874cb9]

Also known as: Samurai

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Navy

Jewels

31j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1975

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