Seiko Cal. 5637 - 111

Seiko 5637-111

The 5637-111 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5637 caliber with 19j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-796f34226c73]

Also known as: Monster, Sumo

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
37mm
Case Thickness
9.5mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
140m
Dial Color
Green
Jewels
19j
Frequency
21,600 bph
Power Reserve
65 hours
Year
1971

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seikata-wm-796f34226c73