Seiko Cal. 5691 - 187

Seiko 5691-187

The Seiko 5691-187 represents an important milestone in Seiko's 1984 lineup. Powered by the 5691 caliber with 21j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-9c1ae4a4bc83]

Also known as: Bullhead, Rally

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
43mm
Case Thickness
14.2mm
Lug Width
19mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
200m
Dial Color
Burgundy
Jewels
21j
Frequency
21,600 bph
Power Reserve
55 hours
Year
1984

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