I received them and picked up one slipper and put it back in the box. The sound quality isnt up there with the $100 units of course, but it is fine for vocal range. Sturdy straps. Secured with the hitch pin and now with the counter weights it moves with ease. Absolutely great value for the price. They used to fall out numerous times per day before adding these ear tips. Ill admit I was skeptical at first. Its a good product, but had to return because it cannot be used on a door and this is not specified one way or another in the item description. Le support est monté sur une rotule serrée avec une vis (les rotations à 360 degrés sont possibles). By contrast while that can happen any well-produced track has far less booming and just a good base, and the amount of L-R separation, the precision with which sound location varies on these is really quite notable.