Seiko Cal. 7156 - 378

The Seiko 7156-378 represents an important milestone in Seiko's 1982 lineup. With its 21mm lug width and 13.3mm profile, it sits comfortably on most wrists. [seikata-wm-0d4911bb4aeb]

Also known as: Sportsmatic, Emperor

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

13.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

200m

Dial Color

Burgundy

Jewels

30j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1982

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