Seiko Cal. 7140 - 340

The Seiko 7140-340 represents an important milestone in Seiko's 1967 lineup. The Inner Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-b26db8bf3926]

Also known as: Sumo, Helmet

Specifications

Movement

Solar

Case Material

Titanium

Case Width

41mm

Case Thickness

12.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1967

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