Seiko Cal. 4490 - 506

The Seiko 4490-506 represents an important milestone in Seiko's 1976 lineup. Powered by the 4490 caliber with 23j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-ed9b3441b9c6]

Also known as: Samurai, Crown

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

15.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

23j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1976

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