I bought this mono bluetooth receiver a few months ago. So, are my general reviews after using it. First of all, the design is very appealing. This is a positive point for any earphone or speaker. However if you get to the performance , then , as I have experienced , the audio quality is very bad. Also , the Bluetooth range is very poor. The speakers get disconnected from my mobile even when I am just in the next room. I had faced a lot of trouble while using it. Secondly , the call response is also bad. The battery life of these earphones is good. But, moreover for this price range , there are not recommended.