Seiko Cal. 7120 - 509

The Seiko 7120-509 represents an important milestone in Seiko's 1973 lineup. Powered by the 7120 caliber with 23j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-9a40571f084b]

Also known as: Monster, Helmet

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

14.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Champagne

Jewels

23j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1973

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