Seiko Cal. 6665 - 978

The Seiko 6665-978 represents an important milestone in Seiko's 1982 lineup. With its 21mm lug width and 11.3mm profile, it sits comfortably on most wrists. [seikata-wm-a1c688dd35ae]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

11.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

40m

Dial Color

Silver

Jewels

33j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1982

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