Seiko Cal. 5637 - 993

The Seiko 5637-993 represents an important milestone in Seiko's 1973 lineup. Powered by the 5637 caliber with 18j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-e3785c61a3ca]

Also known as: UFO

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

11.0mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

Green

Jewels

18j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1973

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