Seiko Cal. 0728 - 446

This Spring Drive model from 1981 features a 34mm Gold-Plated case. With its 22mm lug width and 14.7mm profile, it sits comfortably on most wrists. [seikata-wm-ddf701d3b3e5]

Also known as: Monster, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

14.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

170m

Dial Color

Champagne

Jewels

26j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1981

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