Seiko Cal. 7156 - 228

The Seiko 7156-228 represents an important milestone in Seiko's 1987 lineup. With its 19mm lug width and 8.6mm profile, it sits comfortably on most wrists. [seikata-wm-821d6bf92e7b]

Also known as: Monster, Sumo

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

39mm

Case Thickness

8.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Cream

Jewels

23j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1987

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