Seiko Cal. 7031 - 721

The Seiko 7031-721 represents an important milestone in Seiko's 1967 lineup. The Bidirectional bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-3ba2f01a22be]

Also known as: Helmet, Crown

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

35mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Cream

Jewels

31j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1967

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