Seiko Cal. 5687 - 890

The Seiko 5687-890 represents an important milestone in Seiko's 1982 lineup. Powered by the 5687 caliber with 17j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-b2e2538f5ca2]

Also known as: Sumo, Sea Horse

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

11.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Burgundy

Jewels

17j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1982

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