Seiko Cal. 4550 - 545

The 4550-545 is a sought-after Spring Drive piece from Seiko's golden era. With its 19mm lug width and 14.4mm profile, it sits comfortably on most wrists. [seikata-wm-741efdce20ba]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

14.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

180m

Dial Color

Green

Jewels

30j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1980

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