This is a great speaker for small money. It worked everything having to perform without major adjustments right away. Bluetooth works very well, about 8 feet by 3 walls through, no problem. A great option is that one of the speaker by briefly tapping the title forward or backward, change the +/- buttons. A long holding the +/- buttons to control the volume changed. Through the additional option of AUX ports can make every beliebgien speakers or amplifier bluetooth capable. A built-in microphone, which serves as a hands-free system, completes the package of a mobile small speaker on at a good price / performance ratio. Powerful sound, only the bass could be better. Therefore 4 stars.
