Seiko Cal. 5663 - 441

The Seiko 5663-441 represents an important milestone in Seiko's 1979 lineup. With its 20mm lug width and 12.3mm profile, it sits comfortably on most wrists. [seikata-wm-9adc1db23ed0]

Also known as: Sumo, Shogun

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

41mm

Case Thickness

12.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

60m

Dial Color

Green

Jewels

36j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1979

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