Seiko Cal. 5613 - 613

The 5613-613 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5613 caliber with 20j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-96b453d3f7a2]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

15.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Cream

Jewels

20j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1998

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