Seiko Cal. 6613 - 537

The Seiko 6613-537 represents an important milestone in Seiko's 1980 lineup. Powered by the 6613 caliber with 21j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-086aed16cf36]

Also known as: Sportsmatic, Sea Horse

Specifications

Movement

Solar

Case Material

Titanium

Case Width

40mm

Case Thickness

11.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

160m

Dial Color

Green

Jewels

21j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1980

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