Seiko Cal. 5687 - 890

Seiko 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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