One thing that nobody seems to stress here or in the official video from Sennheiser, is that when you take the pads out for the first time, you REALLY need to stretch the plastic/vinyl (I dont know what the material is exactly) lining before attempting installation. The clamp itself is plastic and seems heavy duty as well. We were starting to get a headphone collection with learning at home and these make it super easy to organize them and give a dedicated space to put them. I can also link my Prime Music account and play anything. 40s you?ll have to either look at your device to confirm whether they?re on or not, or you?ll have to simply try to play audio through them to test if they?re on. Noise cancelling is great on planes, im in peace and in my own world. I do wish Dearfoam would make the very same slipper they did 30-40 years ago. Ive also used it in corporate environments where the speaker spoke rather softly and could not get satisfactory volume without feedback. For the last 5 months, Ive been using my Tuff-Nano (1TB) as a secondary storage device with my Mac Mini 2018. Another product description (marketing material) says it is molded wood (like MDF) but it is not, it is plastic.