Seiko Cal. 6163 - 656

Released in 1978, the Cal. 6163 with design code 656 was part of Seiko's domestic market collection. With its 20mm lug width and 15.4mm profile, it sits comfortably on most wrists. [seikata-wm-12feda843dce]

Also known as: Sumo, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

15.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Cream

Jewels

34j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1978

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