Seiko Cal. 4490 - 321

The Seiko 4490-321 represents an important milestone in Seiko's 1970 lineup. Powered by the 4490 caliber with 27j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-6a755b6a7b64]

Also known as: Rally

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

42mm

Case Thickness

12.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

180m

Dial Color

Champagne

Jewels

27j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1970

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