Interference or even just the mouse or computer sleeping will cause it to disconnect. Tief und mittel sind gut genug zu Verfügungen. Very very cheap plastic string quality. If you are looking to purchase earbuds based off of my experience I would look elsewhere, I babied these and they still let me down. I needed some knobs for the folding sawhorses and the router table I was building, and was very happy to find these on the "Big A"; saved me from running all over town and being frustrated. These slippers would probably be better suited for people that are looking for something cute and simple, rather than a supportive slipper that can withstand multiple wears. Ive been wearing tennis-style type shoes 90% of time for decades now because of need for comfort. Seem to be very well made. Not less, not much. He loves our slippers so much that I decided to get him a pair of his own.