Seiko Cal. 6646 - 509

The 6646-509 is a sought-after Spring Drive piece from Seiko's golden era. With its 22mm lug width and 11.5mm profile, it sits comfortably on most wrists. [seikata-wm-01cb6af8a71b]

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

11.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

17j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1973

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