Seiko Cal. 6643 - 516

The 6643-516 is a sought-after Hand-Winding piece from Seiko's golden era. With its 20mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-05e1e13f9f5a]

Also known as: Turtle, Emperor

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

11.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Black

Jewels

35j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1979

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