Seiko Cal. 7156 - 320

The Seiko 7156-320 represents an important milestone in Seiko's 1971 lineup. The Coin-Edge bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-f266a6d6a9fb]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

15.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Champagne

Jewels

32j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1971

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