Seiko Cal. 7138 - 301

The Seiko 7138-301 represents an important milestone in Seiko's 1974 lineup. Powered by the 7138 caliber with 28j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-ae34a45c7efe]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

11.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1974

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