Seiko Cal. 7091 - 991

The Seiko 7091-991 represents an important milestone in Seiko's 1968 lineup. Powered by the 7091 caliber with 34j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-916d96051a81]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

15.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

30m

Dial Color

Burgundy

Jewels

34j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1968

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