Seiko Cal. 5643 - 613

The 5643-613 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5643 caliber with 31j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-ccfba590fd68]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

11.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Green

Jewels

31j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1996

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