Seiko Cal. 5637 - 720

Seiko 5637-720

Released in 1971, the Cal. 5637 with design code 720 was part of Seiko's domestic market collection. Powered by the 5637 caliber with 25j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-155d1f63427c]

Also known as: Emperor, Arnie

Specifications

Movement
Quartz
Case Material
Titanium
Case Width
45mm
Case Thickness
14.9mm
Lug Width
18mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
160m
Dial Color
Burgundy
Jewels
25j
Frequency
21,600 bph
Power Reserve
55 hours
Year
1971

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seikata-wm-155d1f63427c