Seiko Cal. 4531 - 518

The Seiko 4531-518 represents an important milestone in Seiko's 1968 lineup. Powered by the 4531 caliber with 28j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-4882475670a4]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

46mm

Case Thickness

10.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Champagne

Jewels

28j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1968

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