"Great! "I told my son that borrowed my speaker TT-SK03 after listening to his music in his car registered on his smartphone. My tests Mount disappointed. No difficulty to listen everywhere my playlist stored on my smartphone. The sound is very correct even broadcast in full power. Laccès is limited to WiFi in the house but seeking the best farthest place of laccès internet to listen to radio or music site and after establishing the connection between the smartphone and the speaker can be tuned broadcast a surprising ray. The price is right for a waterproof speaker of good quality and small size. Only fault is hard to read function keys above to answer a phone call. With a little practice you can overcome this lack of clarity.