The technical innovations of the headset are very nice and work perfectly: touch controls, smartphone app, noise reduction. No complaints. The Bluetooth use is a real treat. You really get a sense of liberté.Toutefois, imperfections cool my enthusiasm, especially when taking into account the price that places the object in the very upscale. First, the autonomy is not huge (a few hours of listening) and the only way to recharge the batterrie is a USB cabling. No computer, no possibility of recharging, which is actually not practical when you are traveling. The headset is for use with a conventional audio cable (one loses the pleasure of wireless headphones), but that, paradoxically, the sound is very poor or bad. It's very frustrating. Second complaint: the weight is therefore that the length can become painful. Finally, the carrying case (a cloth bag beast) is not worthy of the object. Stark should have cast a glance on it because it's ugly and it absolutely protects the helmet in case of impact. In résummé: to buy for wireless listening experience, but for this price, you would expect something more successful. Update of 21/06/13: after a few weeks of use, a guesthouse found additional drawback appeared: the battery protection cover which is on the left earpiece is not fixed, but only magnetized. Result: while traveling, he came off without my noticing. The only way to get the hood is the online sales site of Parrot. And it is not cheap (count 20 with transportation). Conclusion: be very careful because this cover its mounting system is very poorly designed.