Seiko Cal. 7031 - 315

The Seiko 7031-315 represents an important milestone in Seiko's 1975 lineup. The Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-7d7ece8a5938]

Also known as: Baby Tuna, Flighty

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

43mm

Case Thickness

9.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

160m

Dial Color

Champagne

Jewels

17j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1975

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