Seiko Cal. 6635 - 283

The Seiko 6635-283 represents an important milestone in Seiko's 1973 lineup. Powered by the 6635 caliber with 22j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-b36c355f88e5]

Also known as: World Timer

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

39mm

Case Thickness

10.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Cream

Jewels

22j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1973

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