Seiko Cal. 4550 - 178

The 4550-178 is a sought-after Spring Drive piece from Seiko's golden era. With its 19mm lug width and 11.5mm profile, it sits comfortably on most wrists. [seikata-wm-f98498b2e52a]

Also known as: Shogun, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

11.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Navy

Jewels

35j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1970

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