Seiko Cal. 5639 - 792

The 5639-792 is a sought-after Solar piece from Seiko's golden era. Powered by the 5639 caliber with 33j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-3ac30770f6dd]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

11.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1993

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