Seiko Cal. 5613 - 511

The Seiko 5613-511 represents an important milestone in Seiko's 1973 lineup. Powered by the 5613 caliber with 21j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-41f356c50b4f]

Also known as: Bullhead, Helmet

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

42mm

Case Thickness

10.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1973

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