Seiko Cal. 0740 - 985

The Seiko 0740-985 represents an important milestone in Seiko's 1978 lineup. Powered by the 0740 caliber with 29j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-d648648dbe88]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

10.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

30m

Dial Color

Black

Jewels

29j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1978

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