Seiko Cal. 6636 - 700

The Seiko 6636-700 represents an important milestone in Seiko's 1975 lineup. Powered by the 6636 caliber with 18j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-f64325cdff99]

Also known as: World Timer

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

15.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1975

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