Sony Mdrrf925rk Wireless Rf Headphones (Ferrite Magnets) (Headphones )
I purchased this product from a local retail store. The quality of the sound was amazing. I could also hear it clearly when I am in a different room.  After a couple of months usage, the wireless connection stop working, the green light does not come up and heard nothing until unplugging and plugging back the power core behind the wireless controller.  It is not a big deal but I have repeat this step every time I use the headphone.