Seiko Cal. 4478 - 210

This Spring Drive model from 1965 features a 39mm Stainless Steel case. Powered by the 4478 caliber with 17j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-a9000ef457e0]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

14.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

90m

Dial Color

Burgundy

Jewels

17j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1965

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