Seiko Cal. 6639 - 274

The 6639-274 is a sought-after Solar piece from Seiko's golden era. Powered by the 6639 caliber with 22j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-aee7c998a3b3]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

11.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1999

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