Seiko Cal. 6639 - 447

The Seiko 6639-447 represents an important milestone in Seiko's 1967 lineup. Powered by the 6639 caliber with 35j jewels beating at 28,800 bph, it delivers a 48 hours power reserve. [seikata-wm-e6f1c274f594]

Also known as: Monster, Arnie

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

34mm

Case Thickness

15.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

200m

Dial Color

Silver

Jewels

35j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1967

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