Seiko Cal. 4490 - 721

Released in 1979, the Cal. 4490 with design code 721 was part of Seiko's domestic market collection. Powered by the 4490 caliber with 31j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-ebb7ca829e8c]

Also known as: Emperor

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

11.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

170m

Dial Color

Green

Jewels

31j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1979

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