Seiko Cal. 6637 - 830

The Seiko 6637-830 represents an important milestone in Seiko's 1969 lineup. Powered by the 6637 caliber with 33j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-dc72974afd2c]

Also known as: Sportsmatic

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

44mm

Case Thickness

15.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Cream

Jewels

33j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1969

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