Seiko Cal. 7121 - 192

The Seiko 7121-192 represents an important milestone in Seiko's 1979 lineup. Powered by the 7121 caliber with 21j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-55ca857f7b7d]

Also known as: Tuna, Bullhead

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

38mm

Case Thickness

9.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

200m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1979

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