Seiko Cal. 5661 - 143

Seiko 5661-143

The 5661-143 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5661 caliber with 18j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-f643b42b239c]

Also known as: Sumo, Arnie

Specifications

Movement
Quartz
Case Material
Titanium
Case Width
40mm
Case Thickness
10.4mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
140m
Dial Color
Burgundy
Jewels
18j
Frequency
21,600 bph
Power Reserve
62 hours
Year
1974

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