Seiko Cal. 5661 - 779

The 5661-779 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5661 caliber with 19j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-a9b2c394f96a]

Also known as: Silverwave, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

12.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

40m

Dial Color

Silver

Jewels

19j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1990

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