Seiko Cal. 7163 - 901

The Seiko 7163-901 represents an important milestone in Seiko's 1974 lineup. With its 22mm lug width and 11.5mm profile, it sits comfortably on most wrists. [seikata-wm-6be8226d32bf]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

11.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Green

Jewels

20j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1974

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