Seiko Cal. 0731 - 515

The Seiko 0731-515 represents an important milestone in Seiko's 1981 lineup. With its 22mm lug width and 9.1mm profile, it sits comfortably on most wrists. [seikata-wm-0a839e8bd21b]

Also known as: Silverwave, Baby Tuna

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

43mm

Case Thickness

9.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Navy

Jewels

22j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1981

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