Seiko Cal. 6639 - 107

This Automatic model from 1973 features a 45mm Stainless Steel case. Powered by the 6639 caliber with 22j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-6c8097dc47e5]

Also known as: World Timer

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

9.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Cream

Jewels

22j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1973

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