Seiko Cal. 3878 - 727

The Seiko 3878-727 represents an important milestone in Seiko's 1988 lineup. With its 21mm lug width and 10.3mm profile, it sits comfortably on most wrists. [seikata-wm-9bbb84ff510f]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

10.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1988

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