Seiko Cal. 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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