Seiko Cal. 6665 - 178

The Seiko 6665-178 represents an important milestone in Seiko's 1983 lineup. With its 21mm lug width and 15.0mm profile, it sits comfortably on most wrists. [seikata-wm-786c6fde8b87]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

15.0mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Black

Jewels

26j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1983

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