Seiko Cal. 5636 - 990

The Seiko 5636-990 represents an important milestone in Seiko's 1968 lineup. Powered by the 5636 caliber with 32j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-8d82a9d3be51]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

44mm

Case Thickness

15.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1968

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