Seiko Cal. 7156 - 633

The Seiko 7156-633 represents an important milestone in Seiko's 1981 lineup. With its 22mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-4dc2331ed99a]

Also known as: Silverwave, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

13.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Cream

Jewels

17j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1981

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