Seiko Cal. 6640 - 212

The Seiko 6640-212 represents an important milestone in Seiko's 1984 lineup. With its 22mm lug width and 11.0mm profile, it sits comfortably on most wrists. [seikata-wm-45d7a4b2ec4f]

Also known as: Flighty

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

11.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

19j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1984

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