Seiko Cal. 7163 - 381

The Seiko 7163-381 represents an important milestone in Seiko's 1975 lineup. With its 21mm lug width and 15.2mm profile, it sits comfortably on most wrists. [seikata-wm-748bb2b5f73f]

Also known as: UFO, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

15.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Cream

Jewels

17j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1975

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