Seiko Cal. 5661 - 744

Released in 1975, the Cal. 5661 with design code 744 was part of Seiko's domestic market collection. With its 19mm lug width and 10.0mm profile, it sits comfortably on most wrists. [seikata-wm-5defe8502be4]

Also known as: UFO, Flighty

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

10.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1975

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