Seiko Cal. 6630 - 392

The 6630-392 is a sought-after Hand-Winding piece from Seiko's golden era. With its 19mm lug width and 9.4mm profile, it sits comfortably on most wrists. [seikata-wm-adfdbb485fdf]

Also known as: Sumo, Crown

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

9.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

White

Jewels

20j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1990

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