Ok sound, but like most from Sony, poor execution. Occasionally, contact loses the phone at 1m distance. When the battery reaches 20%, a female voice periodically starts to say "please charge!", Ie interrupts whatever is being played to loudly ask you to charge the speaker. The battery life may be about half of what is promised, I think it will also discharge slowly even when the speaker is off. Ridiculous lights and sound functions (sounds like a drum if you clap it in different directions). Can be turned off using the Music center app fortunately. Can't recommend this gadget, not for that price.