Seiko Cal. 4537 - 358

The Seiko 4537-358 represents an important milestone in Seiko's 1997 lineup. Powered by the 4537 caliber with 20j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-20ac39f737b3]

Also known as: Sportsmatic, Arnie

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

10.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1997

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