Seiko Cal. 6680 - 637

The 6680-637 is a sought-after Solar piece from Seiko's golden era. Powered by the 6680 caliber with 35j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-4376c8a48d67]

Also known as: Sumo, Arnie

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

8.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1985

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