Seiko Cal. 4538 - 659

The Seiko 4538-659 represents an important milestone in Seiko's 1991 lineup. With its 18mm lug width and 8.7mm profile, it sits comfortably on most wrists. [seikata-wm-66fe5e47dde2]

Also known as: Helmet, Crown

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

8.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Green

Jewels

23j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1991

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