LED Himalayan Salt Rock USB lamp w/ Natural Wood Base Colour Changing Lot Of 2. This set of 2 rock salt lamps is in good working condition, has been tested. Salt rocks offer a healing and cleansing of the air and provides a warm colour changing comfort. Each rock is on a natural wood base, 1 rock is roughly 5.5 inches tall and the other is 4.5 inches tall. Each rock is powered by a USB cord and fits the standard USB plug (not provided). Please see photos for more details on this bundle’s condition and appearance. Sold as is and as seen in photos condition, thanks for looking.