Seiko Cal. 5637 - 907

The 5637-907 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5637 caliber with 31j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-13daec35fced]

Also known as: Samurai

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

8.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

180m

Dial Color

Green

Jewels

31j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1985

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