Seiko Cal. 5613 - 217

This Spring Drive model from 1972 features a 37mm Hardlex-Coated Steel case. Powered by the 5613 caliber with 23j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-fc3646d85c47]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Burgundy

Jewels

23j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1972

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