Seiko Cal. 4439 - 693

This Spring Drive model from 1966 features a 34mm PVD Black case. Powered by the 4439 caliber with 20j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-4f371df04f54]

Also known as: Sumo, Crown

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

13.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1966

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