Received the headphones in 48 hours which was great for free delivery. Very disappointing considering it was a gift for my daughter. It took a bit of effort to remove the old ones but the tool supplied made it quite easy in the end. But I went for a three-mile walk and they felt much better. If its pulsing and I try and connect my phone thru Bluetooth it stops charging when connection is trying to be made. I can already sense that, just like my last pair, these are going to be a timeless addition to my summer wardrobe and that Ill be wearing them non-stop as soon as the weather permits. En mi caso mi hijo calza 18 y pedí el 16 Ive worn them with my sundresses and they are my go to for the beach. MAN. This piece is a smooth as silk and yet does not move on the slot at all once adjusted.