Seiko Cal. 4590 - 355

The 4590-355 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4590 caliber with 29j jewels beating at 28,800 bph, it delivers a 48 hours power reserve. [seikata-wm-e596d96ef9fe]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

8.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Green

Jewels

29j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1972

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