Seiko Cal. 6140 - 720

The Seiko 6140-720 represents an important milestone in Seiko's 1970 lineup. Powered by the 6140 caliber with 18j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-cb7abf3acc92]

Also known as: Silverwave, Flighty

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

140m

Dial Color

Burgundy

Jewels

18j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1970

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