Seiko Cal. 6660 - 678

The Seiko 6660-678 represents an important milestone in Seiko's 1985 lineup. With its 19mm lug width and 8.6mm profile, it sits comfortably on most wrists. [seikata-wm-5a9a0ae61425]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

40mm

Case Thickness

8.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Silver

Jewels

35j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1985

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