Seiko Cal. 4540 - 612

The Seiko 4540-612 represents an important milestone in Seiko's 1984 lineup. Powered by the 4540 caliber with 21j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-f037c73d939a]

Also known as: Helmet, UFO

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

10.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

170m

Dial Color

Cream

Jewels

21j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1984

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