Surprising good sound quality, stability and range (>40 ft) for such an inexpensive device! Seems to run for hours on a charge. Getting the wireless connection started was a little tricky at first, but once I figured out the proper order to connect it (pull mic out from case, then plug receiver into iPhone), it works every time. The receiver has a stubby lightning plug sticking out the side, so if your phone is in a case, you will need a short lightning extension cord. I didn't think I needed 2 mics, but when I had to record two speakers at once it was a blessing! The charging case is pretty cool too. Bottom line: It just works. Very pleased!