Seiko Cal. 4550 - 150

This Spring Drive model from 1980 features a 34mm PVD Black case. Powered by the 4550 caliber with 21j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-c4655e32b5c5]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

13.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Silver

Jewels

21j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1980

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