Seiko Cal. 4550 - 199

This Spring Drive model from 1966 features a 36mm PVD Black case. Powered by the 4550 caliber with 22j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-ddfc91790740]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

36mm

Case Thickness

11.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1966

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