Seiko Cal. 7131 - 121

The Seiko 7131-121 represents an important milestone in Seiko's 1978 lineup. Powered by the 7131 caliber with 33j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-a023bffe3b6d]

Also known as: UFO, Sea Horse

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

8.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

130m

Dial Color

Green

Jewels

33j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1978

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