There is no way to get in touch with the seller or manufacturer anywhere on the product box or in the guide book. Worked like a charm My daughter loves these shoes. auf deinen Stolz - nehm die Anleitung und du bist in 20 Minuten fertig! Compared to my Yamaha outdoor speakers that quality is lacking. This isnt the same as a home stereo or even an 11" karaoke speaker. Very good , definitely recommend this tablet . It has only been washed once. She was impressed as well, which means I will probably have to buy these again. The screws at the top that hold the bar that the door slide on arrived completely broken.