Seiko Cal. 5644 - 666

The 5644-666 is a sought-after Hand-Winding piece from Seiko's golden era. With its 19mm lug width and 15.6mm profile, it sits comfortably on most wrists. [seikata-wm-a86db5acdb18]

Also known as: Turtle, Helmet

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

15.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1992

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