Seiko Cal. 6660 - 584

The Seiko 6660-584 represents an important milestone in Seiko's 1980 lineup. Powered by the 6660 caliber with 31j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-c5cbe5a718c7]

Also known as: Rally

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

46mm

Case Thickness

11.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

50m

Dial Color

White

Jewels

31j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1980

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