Was so disappointed in this I ended up returning it. The quality is better than I expected considering the price. Peal off the tape on the back, and stick it up. Second: sound quality on Bluetooth does take a hit, as already mentioned by others, in the sense that the tinniness/scratchiness comes back even with the EQ. And finally something that works & is easy to use. I looked at others, this one is all metal minus one small collar that is plastic. The design is really pretty and the construction is top notch. Not sure why they dont use the same voice. This is more fitting for a child’s head and not a adult. The sole is cushioned, but not too squishy.