Seiko Cal. 5637 - 742

The Seiko 5637-742 represents an important milestone in Seiko's 1980 lineup. Powered by the 5637 caliber with 17j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-9da31007e753]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

10.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Champagne

Jewels

17j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1980

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