Seiko Cal. 6643 - 147

This Solar model from 1978 features a 38mm Stainless Steel case. Powered by the 6643 caliber with 19j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-c2b79451faf1]

Also known as: Sumo, Shogun

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

8.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1978

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