Seiko Cal. 4597 - 990

The Seiko 4597-990 represents an important milestone in Seiko's 1991 lineup. The Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-f1a8f58359b7]

Also known as: Helmet, UFO

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

40m

Dial Color

Champagne

Jewels

19j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1991

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