Seiko Cal. 7090 - 731

The Seiko 7090-731 represents an important milestone in Seiko's 1981 lineup. Powered by the 7090 caliber with 20j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-7024e718be88]

Also known as: Crown

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

34mm

Case Thickness

10.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

150m

Dial Color

Champagne

Jewels

20j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1981

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