4GHz connection is stable and allows free movement around the main floor of our house, where his desk is, and further. It is a very well made, shiny and delicate but not fragile. No adhesive whatsoever. Thats probably to be expected, I guess. But these things looked like a dust mop after just a couple of wearings. i never had stinky feet with any other shoes. hoe, or a size 6: a tad snugger fit which fits the best. I will be trying the PS Gold wireless headphones next. These slippers are really cute. I bought this unit for use while working as a fire lookout for the U.