Seiko Cal. 6660 - 677

The Seiko 6660-677 represents an important milestone in Seiko's 1983 lineup. Powered by the 6660 caliber with 26j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-8e824052a78e]

Also known as: Rally

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

34mm

Case Thickness

9.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Silver

Jewels

26j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1983

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