Bought as I said back in 2002, since almost always is in Betreib and sound okay I think. A noise is actually with any other wireless headphones also available, which is not a defect.
There is only one major deficiency, the headphones pushes immensely and is not suitable for eyeglass wearers. But those are other headphones we know, also.
Simple, however, is that you can beteiben these headphones easily with only 2 conventional AAA batteries. One does not need the electricity-eating Charging Station for any a built superfluous battery like other radio of headphones. That's great for me and already a huge advantage.
Also, I find the headphones ansich very easy just to get up sometimes in front as if you were caught with a screw clamp.
But still this very convenient headset is always better than so do others such as from the discounter competitors (brand Aldi & Co). therefore clear 4 stars, at the price of higher head is still very good.