Seiko Cal. 7147 - 312

The Seiko 7147-312 represents an important milestone in Seiko's 1970 lineup. Powered by the 7147 caliber with 18j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-8b1d24cf4604]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

10.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1970

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