Seiko Cal. 6633 - 639

The Seiko 6633-639 represents an important milestone in Seiko's 1977 lineup. Powered by the 6633 caliber with 21j jewels beating at 28,800 bph, it delivers a 48 hours power reserve. [seikata-wm-ca8616d97656]

Also known as: Pogue

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

34mm

Case Thickness

11.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Champagne

Jewels

21j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1977

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