So you may need those if you plan on hanging heavy stuff on it. If you have pets, their fur will be on their too. My Galaxy S20 allows you to connect to two separate bluetooth devices at once so I was able to wear one FlyBud and one Galaxy Bud at the same time. Seré concreto en el análisis pues ya hay reseñas más completas e iré a sus pros y contras:A. Small footprint tucks away easily in the corner and pleasing to the eyeCons:Rubber padding on the rails fell off immediately after 2-3 weeks of usePinch Warning: The design makes it VERY EASY to pinch yourself on the metal rail when placing weights back on the bottom shelf. Its now unwearable so the money I spent on these was totally wasted. DaherBequemlichkeit - TopTon + Mikrofonqualität - TopAussehen - TopAber nun doch noch ein paar negative Punkte die mir während des Tragens aufgefallen sind und besonders ein Grund, weshalb ich tatsächlich überlegt hatte es zurückzugeben, aber mich dann aus oben genannten Gründen doch anders entschieden habe. Love them, they really are worth the money. Very Disappointed There is no need for a power supply as another review mentioned.