Seiko Cal. 6663 - 400

The Seiko 6663-400 represents an important milestone in Seiko's 1989 lineup. With its 19mm lug width and 15.2mm profile, it sits comfortably on most wrists. [seikata-wm-bbad3ce3dca1]

Also known as: UFO, Rally

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

15.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

White

Jewels

32j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1989

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