I give 5 stars because the product is good, the sound is good and the battery gives a good autonomy. I have no problem making it work with an Ipad, a Samsung smartphone, IMac but I was unable to make it work with a PC whose operating system is Windows 8, but I do not despair. Of course all this in Bluetooth and the PC so far with a connecting cable. Good value and fast delivery to conclude in a quality packaging.