The helmet headset Bluedio M2 HURRICANE series of really amazing because I needed a helmet for sports and I came across it on net and I tested, I was really surprised at this little sports helmet and this brand still little known to the public. I decided to give you my impressions with a little amateur but tests that can help you, Let's start with the box of the helmet is really very good with instructions in French, the helmet protect some builder should be inspired. It contains a USB cable for charging the headphones, ear tips in different sizes, 3 to be exact sizes (small, medium and large). I tested the tips with my daughter and we both found our size ,, It is a Bluetooth headset made for the SPORT and it is really great in this register, I tested it by running (1 hour), road bike (3 hours (not recommended risk of accident)) but to realize tests and mountain biking in the hills about 2 hours, the helmet stays in place .It is very lightweight, one forgets that it is so comfortable, it gives no hot ears and I have no particular problem with my sweat, If you are sporting this helmet should fit you, This Bluedio M2 chooses sober look, and boasts an impeccable build quality .It discreet and truly comfortable headphones for everyday use (transit, train, bus etc ,,). This headset is Bluetooth connection works fine no problems pairing, I tested with an iPhone 3GS, an android phone and even a PS3 without any concern for quick pairing. You can make or receive calls, communications are clear in emissions or receptions. I logged on a tablet again nothing to say this kit is a marvel compared to the competition. Furthermore I tested the headphones with FIFA 14 on PS3 online (chat) it works without any problems, Next most important sound, these headphones doing very well. The sound quality of this headset is really good bass, treble and midrange are present, whatever the style of music (pop, rock, rap, classical etc ,,) I tested this helmet on movies, game football on my phone and I was not disappointed or surprised even more. For me it is really a helmet on top and has nothing to envy to competition Light, practical, discreet Good quality workmanship With a very good sound versatile (sport and transit ,, etc.) On the negative for me they are uncommon It lacks a 3.5mm connector for completeness as Bluetooth touch tablet that does not grow on trees, This helmet and brand that deserves BE conceive sold in large known brands (Fnac, Boulanger etc ...) instead of store brand or other who are not up to par in terms of quality, finish, etc ... . I recommend without hesitation to people who practice SPORT person who seeks a discreet and versatile headset Bluedio the M2 helmet HURRICANE series because for me it really on top, dailleurs I have always with me,