Seiko Cal. 7156 - 728

The Seiko 7156-728 represents an important milestone in Seiko's 1987 lineup. It features a Black dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-a906c23ae816]

Also known as: Tuna, Arnie

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

41mm

Case Thickness

9.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Black

Jewels

19j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1987

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