The boom mic is crystal clear and the headphones sound great.  closed backs which were bought for travelling (noise isolation). The build quality is excellent and the earcups are soft and enveloping, far more comfy than most competitors. Comfortable for walking Ch 1: Understanding EMFsCh 2: 5G: The Single Biggest Health Experiment EverCh 3: Cell Phones Are the Cigarettes of the 21st CenturyCh 4: How EMFs Damage Your BodyCh 5: EMFs and DiseaseCh 6: How Do You Repair EMF-Related Damage?Ch 7: How to Reduce Your EMF ExposureCh 8: The Path from HereResourcesApp 1: Damaging Effects of Excessive PeroxynitriteApp 2: Studies that Demonstrate Harmful Effects of EMFs Hard to get started. I got two of these, one for me and one for my granddaughter. the interior packaging was incredible. At +/- $150. Ok, is it possible to be hooked on a shoe rack?? I am!