Seiko Cal. 6634 - 137

The Seiko 6634-137 represents an important milestone in Seiko's 1967 lineup. Powered by the 6634 caliber with 19j jewels beating at 28,800 bph, it delivers a 48 hours power reserve. [seikata-wm-0a08c49d276b]

Also known as: Bellmatic

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

15.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1967

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