Seiko Cal. 4533 - 518

The Seiko 4533-518 represents an important milestone in Seiko's 1970 lineup. Powered by the 4533 caliber with 18j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-b89cd905dbcc]

Also known as: Tuna, Helmet

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

34mm

Case Thickness

13.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Silver

Jewels

18j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1970

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