Seiko Cal. 4517 - 331

This Spring Drive model from 1970 features a 45mm PVD Black case. Powered by the 4517 caliber with 31j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-f5039e37b4c3]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

11.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

90m

Dial Color

Cream

Jewels

31j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1970

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