I'm really impressed with this product. I really do not expect it to be so. The quality / price is just unbeatable. The sound particularly surprised me. I thought it was going to sizzle a bit, perhaps, lacking bass, it would look like a cheap radio, but in fact not at all, the sound is actually very good for a gadget like that! I was also afraid of the cup. My first failed attempts proved successful, because I could then see the strength of the object! No scratch, despite two or three good falls two meters. Plastic is very strong but in fact turns out just enough flexible. After these tests, I realized he had just check the implementation of the cup. Once properly placed, no problem. Nothing to say about the tightness, it works perfectly. The Bluetooth connection is amazingly simple gadget and pay the luxury of having different sounds for connection, disconnection and switching on and off ... The only test I have not done is for handsfree communications. I had not acquired for that but suddenly, I even considered buying one second ...