Seiko Cal. 6663 - 906

The 6663-906 is a sought-after Hand-Winding piece from Seiko's golden era. With its 21mm lug width and 15.0mm profile, it sits comfortably on most wrists. [seikata-wm-0b1655ae63c6]

Also known as: Rally

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

15.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

120m

Dial Color

Burgundy

Jewels

32j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1969

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