Seiko Cal. 4476 - 978

The 4476-978 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4476 caliber with 17j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-54ea81b8dac2]

Also known as: Silverwave, Navigator

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

13.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Green

Jewels

17j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1982

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