Seiko Cal. 6163 - 381

The Seiko 6163-381 represents an important milestone in Seiko's 1987 lineup. With its 21mm lug width and 11.7mm profile, it sits comfortably on most wrists. [seikata-wm-06dccb7afe79]

Also known as: Tuna, Silverwave

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

11.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

200m

Dial Color

Green

Jewels

25j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1987

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