Seiko Cal. 4590 - 665

The Seiko 4590-665 represents an important milestone in Seiko's 1978 lineup. Powered by the 4590 caliber with 24j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-51bbc59e4122]

Also known as: Helmet, UFO

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

14.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Cream

Jewels

24j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1978

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