Seiko Cal. 5647 - 539

Released in 1979, the Cal. 5647 with design code 539 was part of Seiko's domestic market collection. With its 20mm lug width and 15.3mm profile, it sits comfortably on most wrists. [seikata-wm-b3aa6ebd987e]

Also known as: UFO, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

White

Jewels

18j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1979

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