Seiko Cal. 4537 - 391

The Seiko 4537-391 represents an important milestone in Seiko's 1996 lineup. With its 18mm lug width and 15.3mm profile, it sits comfortably on most wrists. [seikata-wm-25311f9a7d4a]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

15.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

120m

Dial Color

Silver

Jewels

34j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1996

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