Seiko Cal. 7140 - 342

The Seiko 7140-342 represents an important milestone in Seiko's 1967 lineup. Powered by the 7140 caliber with 27j jewels beating at 28,800 bph, it delivers a 46 hours power reserve. [seikata-wm-e9cf635004f7]

Also known as: Helmet, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

10.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

100m

Dial Color

Burgundy

Jewels

27j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1967

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