Seiko Cal. 4590 - 312

The Seiko 4590-312 represents an important milestone in Seiko's 1968 lineup. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-39ead7367693]

Also known as: Sumo, UFO

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

40mm

Case Thickness

15.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Green

Jewels

36j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1968

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