Seiko Cal. 4556 - 906

The 4556-906 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4556 caliber with 23j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-654b8290499f]

Also known as: Shogun, Silverwave

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

14.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

80m

Dial Color

White

Jewels

23j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1990

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