Let me say, first off, these headphones 'could' be great. The sound that the listener receives is top-notch with deep bass, the range is sufficient for our home (I haven't actually tested beyond 20-30 feet, but I have no need to wander any further afield), they are very comfortable, and the ability to recharge is awesome. No mucking around with batteries or cables.
However, I can NOT recommend this product. Sony has designed an ON/OFF switch that engages when the listener places the phones on their head, and disengages when the unit is removed (to save battery life when not cradled). This feature randomly engages and disengages while wearing the set, resulting in frequent and annoying clicks and pops in the listener's ear (and interruption to the audio stream). I've studied the unit and the mechanism that engages the audio feed is surprisingly flimsy and poorly engineered. Without moving or any noticeable cause from myself, the set will (POP! CRACK!!) repeatedly trip the power toggle frequently, resulting in much annoyance and frustration.
These phones, when they work, are awesome. However, they don't work in a fashion that myself or my family find acceptable (my daughter has given up on using them altogether). Very poorly designed and I'm extremely disappointed that I spent over $70 for a product that's basically unusable.
Also disappointed that, unknown to myself, Amazon does NOT accept refund or exchange. My only recourse is to contact Sony and pursue warranty repair. I'll chalk this up to a mistake made and I won't purchase electronics from Amazon in the future.