Seiko Cal. 7140 - 904

The Seiko 7140-904 represents an important milestone in Seiko's 1975 lineup. Powered by the 7140 caliber with 19j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-3cb78e800744]

Also known as: Turtle, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Black

Jewels

19j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1975

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