Seiko Cal. 7031 - 553

The Seiko 7031-553 represents an important milestone in Seiko's 1981 lineup. Powered by the 7031 caliber with 34j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-5d438d617625]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

44mm

Case Thickness

15.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

100m

Dial Color

Burgundy

Jewels

34j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1981

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