Seiko Cal. 4417 - 639

The Seiko 4417-639 represents an important milestone in Seiko's 1976 lineup. Powered by the 4417 caliber with 23j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-71557415a3df]

Also known as: Rally, World Timer

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

42mm

Case Thickness

12.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Cream

Jewels

23j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1976

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