Seiko Cal. 6660 - 421

The 6660-421 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6660 caliber with 17j jewels beating at 36,000 bph, it delivers a 68 hours power reserve. [seikata-wm-db58d5012dae]

Also known as: Goldfeather, Sportsmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

12.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

100m

Dial Color

Champagne

Jewels

17j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1985

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