Seiko Cal. 4512 - 612

The Seiko 4512-612 represents an important milestone in Seiko's 1974 lineup. Powered by the 4512 caliber with 20j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-27d5dcc0def4]

Also known as: Sportsmatic, Navigator

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Silver

Jewels

20j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1974

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