Seiko Cal. 5664 - 647

The 5664-647 is a sought-after Hand-Winding piece from Seiko's golden era. With its 18mm lug width and 14.6mm profile, it sits comfortably on most wrists. [seikata-wm-efb4bc6a4606]

Also known as: Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

14.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

White

Jewels

34j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1977

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