Seiko Cal. 7031 - 511

The Seiko 7031-511 represents an important milestone in Seiko's 1987 lineup. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-d3579ce247de]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

40mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

120m

Dial Color

Black

Jewels

36j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1987

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