Seiko Cal. 4539 - 713

The Seiko 4539-713 represents an important milestone in Seiko's 1979 lineup. With its 18mm lug width and 14.9mm profile, it sits comfortably on most wrists. [seikata-wm-b10b8d1ebbb8]

Also known as: UFO, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

14.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

60m

Dial Color

White

Jewels

26j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1979

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